P. G. Amazeen, Is Dynamics the Content of a Generalized Motor Program for Rhythmic Interlimb Coordination?, Journal of Motor Behavior, vol.16, issue.3, pp.233-251, 2002.
DOI : 10.1037/0096-1523.23.5.1454

F. Baldissera, P. Cavallari, G. Marini, and G. Tassone, Differential control of inphase and anti-phase coupling of rhythmic movements of ipsilateral hand and foot, Experimental Brain Research, vol.83, pp.375-380, 1991.

B. G. Bardy, Postural coordination dynamics in standing humans Coordination dynamics: Issues and trends, 2004.

B. G. Bardy, E. Faugloire, and P. Fourcade, Changes in postural patterns with learning and expertise, Progress in Motor Control IV

B. G. Bardy, E. Faugloire, and T. A. Stoffregen, The dynamics of learning new postural patterns

B. G. Bardy, L. Marin, T. A. Stoffregen, and R. J. Bootsma, Postural coordination modes considered as emergent phenomena., Journal of Experimental Psychology: Human Perception and Performance, vol.25, issue.5, pp.1284-1301, 1999.
DOI : 10.1037/0096-1523.25.5.1284

B. G. Bardy, O. Oullier, R. J. Bootsma, and T. A. Stoffregen, Dynamics of human postural transitions., Journal of Experimental Psychology: Human Perception and Performance, vol.28, issue.3, pp.499-514, 2002.
DOI : 10.1037/0096-1523.28.3.499
URL : https://hal.archives-ouvertes.fr/hal-01441373

E. Batschelet, Circular statistics in biology, 1981.

P. J. Beek, C. E. Peper, and D. F. Stegeman, Dynamical models of movement coordination, Human Movement Science, vol.14, issue.4-5, pp.573-608, 1995.
DOI : 10.1016/0167-9457(95)00028-5

N. Bernstein, The co-ordination and regulation of movement, 1967.

J. J. Buchanan and F. B. Horak, Emergence of postural patterns as a function of vision and translation frequency, Journal of Neurophysiology, vol.81, pp.2325-2339, 1999.

J. J. Buchanan and F. B. Horak, Transitions in a postural task: do the recruitment and suppression of degrees of freedom stabilize posture?, Experimental Brain Research, vol.139, issue.4, pp.482-494, 2001.
DOI : 10.1007/s002210100798

J. J. Buchanan and F. B. Horak, Voluntary control of postural equilibrium patterns, Behavioural Brain Research, vol.143, issue.2, pp.121-140, 2003.
DOI : 10.1016/S0166-4328(03)00038-X

W. D. Byblow, R. G. Carson, and D. Goodman, Expressions of asymmetries and anchoring in bimanual coordination, Human Movement Science, vol.13, issue.1, pp.3-28, 1994.
DOI : 10.1016/0167-9457(94)90027-2

R. G. Carson, Neuromuscular-skeletal constraints upon the dynamics of perception-action coupling, Experimental Brain Research, vol.110, issue.1, pp.99-110, 1996.
DOI : 10.1007/BF00241379

R. G. Carson, Governing Coordination. Why do Muscles Matter?, Coordination dynamics: Issues and trends, pp.103-121, 2004.
DOI : 10.1007/978-3-540-39676-5_8

E. Faugloire and B. G. Bardy, Expertise sportive et apprentissage d'une nouvelle coordination posturale, 2002.

E. Faugloire, B. G. Bardy, O. Merhi, and T. A. Stoffregen, Exploring coordination dynamics of the postural system with real-time visual feedback, Neuroscience Letters, vol.374, issue.2
DOI : 10.1016/j.neulet.2004.10.043

E. Faugloire and T. A. Stoffregen, The dynamics of learning new postures, Studies in perception and action VII, pp.109-112, 2003.

N. I. Fisher, Statistical analysis of circular data, 1995.
DOI : 10.1017/CBO9780511564345

R. J. Fontaine, T. D. Lee, and S. P. Swinnen, Learning a new bimanual coordination pattern: Reciprocal influences of intrinsic and to-be-learned patterns., Canadian Journal of Experimental Psychology/Revue canadienne de psychologie exp??rimentale, vol.51, issue.1, pp.1-9, 1997.
DOI : 10.1037/1196-1961.51.1.1

A. Fuchs, V. K. Jirsa, H. Haken, and J. A. Kelso, Extending the HKB model of coordinated movement to oscillators with different eigenfrequencies, Biological Cybernetics, vol.21, issue.1, pp.21-30, 1996.
DOI : 10.1007/BF00199134

A. M. Gentile, A Working Model of Skill Acquisition with Application to Teaching, Quest, vol.74, issue.11, pp.3-23, 1972.
DOI : 10.1080/00336297.1972.10519717

H. Haken, Synergetics, an introduction: Nonequilibrium phase transitions and selforganization in physics, chemistry, and biology, 1977.

H. Haken, Advanced synergetics: Instability hierarchies of self-organizing systems and devices, 1983.
DOI : 10.1007/978-3-642-45553-7

H. Haken, J. A. Kelso, and H. Bunz, A theoretical model of phase transitions in human hand movements, Biological Cybernetics, vol.37, issue.5, pp.347-356, 1985.
DOI : 10.1007/BF00336922

N. J. Hodges and I. M. Franks, Learning as a function of coordination bias: building upon pre-practice behaviours, Human Movement Science, vol.21, issue.2, pp.231-258, 2002.
DOI : 10.1016/S0167-9457(02)00101-X

N. J. Hodges and T. D. Lee, The role of augmented information prior to learning a bimanual visual-motor coordination task: Do instructions of the movement pattern facilitate learning relative to discovery learning?, British Journal of Psychology, vol.90, issue.3, pp.389-403, 1999.
DOI : 10.1348/000712699161486

F. B. Horak and L. M. Nashner, Central programming of postural movements: Adaptations to altered support-surface configurations, Journal of Neurophysiology, vol.55, pp.1369-1381, 1986.

F. B. Horak, L. M. Nashner, and H. C. Diener, Postural strategies associated with somatosensory and vestibular loss, Experimental Brain Research, vol.82, issue.1, pp.167-177, 1990.
DOI : 10.1007/BF00230848

J. J. Jeka and J. A. Kelso, Manipulating symmetry in the coordination dynamics of human movement., Journal of Experimental Psychology: Human Perception and Performance, vol.21, issue.2, pp.360-374, 1995.
DOI : 10.1037/0096-1523.21.2.360

J. A. Kelso, On the oscillatory basis of movement, Bulletin of the Psychonomic Society, vol.18, p.63, 1981.

J. A. Kelso, Phase transitions and critical behavior in human bimanual coordination, American Journal of Physiology: Regulatory, Integrative, and Comparative, vol.15, pp.1000-1004, 1984.

J. A. Kelso, Elementary Coordination Dynamics, Interlimb coordination: Neural, dynamical, and cognitive constraints, pp.301-318, 1994.
DOI : 10.1016/B978-0-12-679270-6.50020-6

J. A. Kelso, The informational character of self-organized coordination dynamics, Human Movement Science, vol.13, issue.3-4, pp.393-413, 1994.
DOI : 10.1016/0167-9457(94)90047-7

J. A. Kelso, Dynamic patterns, 1995.
URL : https://hal.archives-ouvertes.fr/pasteur-01342909

J. A. Kelso, J. D. Delcolle, and G. Schöner, Action-perception as a pattern formation process, Attention and Performance XIII, pp.139-169, 1990.

J. A. Kelso, M. Ding, and G. Schöner, Dynamic pattern formation: A primer, Principles of organization in organisms, pp.397-439, 1992.

J. A. Kelso and J. J. Jeka, Symmetry breaking dynamics of human multilimb coordination., Journal of Experimental Psychology: Human Perception and Performance, vol.18, issue.3, pp.645-668, 1992.
DOI : 10.1037/0096-1523.18.3.645

J. A. Kelso, J. P. Scholz, and G. Schöner, Nonequilibrium phase transitions in coordinated biological motion: critical fluctuations, Physics Letters A, vol.118, issue.6, pp.279-284, 1986.
DOI : 10.1016/0375-9601(86)90359-2

J. A. Kelso, D. L. Southard, and D. Goodman, On the nature of human interlimb coordination, Science, vol.203, issue.4384, pp.1029-1031, 1979.
DOI : 10.1126/science.424729

J. A. Kelso and P. G. Zanone, Coordination dynamics of learning and transfer across different effector systems., Journal of Experimental Psychology: Human Perception and Performance, vol.28, issue.4, pp.776-797, 2002.
DOI : 10.1037/0096-1523.28.4.776

Y. G. Ko, J. H. Challis, and K. M. Newell, Postural coordination patterns as a function of dynamics of the support surface, Human Movement Science, vol.20, issue.6, pp.737-764, 2001.
DOI : 10.1016/S0167-9457(01)00052-5

Y. G. Ko, J. H. Challis, and K. M. Newell, Learning to coordinate redundant degrees of freedom in a dynamic balance task, Human Movement Science, vol.22, issue.1, pp.47-66, 2003.
DOI : 10.1016/S0167-9457(02)00177-X

Y. G. Ko, J. H. Challis, J. P. Stitt, and K. M. Newell, Organization of Compensatory Postural Coordination Patterns, Journal of Motor Behavior, vol.10, issue.4, pp.325-342, 2003.
DOI : 10.1007/978-1-4684-2847-6_3

V. Kostrubiec and P. G. Zanone, Memory dynamics: distance between the new task and existing behavioural patterns affects learning and interference in bimanual coordination in humans, Neuroscience Letters, vol.331, issue.3, pp.193-197, 2002.
DOI : 10.1016/S0304-3940(02)00878-9

P. N. Kugler, J. A. Kelso, and M. T. Turvey, 1 On the Concept of Coordinative Structures as Dissipative Structures: I. Theoretical Lines of Convergence, 1980.
DOI : 10.1016/S0166-4115(08)61936-6

M. J. Kurz and N. Stergiou, Effect of normalization and phase angle calculations on continuous relative phase, Journal of Biomechanics, vol.35, issue.3, pp.369-374, 2002.
DOI : 10.1016/S0021-9290(01)00211-1

K. S. Lashley, Basic neural mechanisms in behavior., Psychological Review, vol.37, issue.1, pp.1-24, 1930.
DOI : 10.1037/h0074134

K. S. Lashley, The problem of cerebral organization in vision, Biological Symposia. Vol VII. Visual Mechanisms, pp.301-322, 1942.

T. D. Lee, Intention in Bimanual Coordination Performance and Learning, 2004.
DOI : 10.1007/978-3-540-39676-5_3

T. D. Lee, S. P. Swinnen, and S. Verschueren, Relative Phase Alterations during Bimanual Skill Acquisition, Journal of Motor Behavior, vol.33, issue.3, pp.263-274, 1995.
DOI : 10.1037/0096-1523.18.2.403

E. N. Lorenz, Deterministic Nonperiodic Flow, Journal of the Atmospheric Sciences, vol.20, issue.2, pp.130-141, 1963.
DOI : 10.1175/1520-0469(1963)020<0130:DNF>2.0.CO;2

K. V. Mardia, Statistics of directional data, 1972.

L. Marin, B. G. Bardy, B. Baumberger, M. Flückiger, and T. A. Stoffregen, Interaction between task demands and surface properties in the control of goal-oriented stance, Human Movement Science, vol.18, issue.1, pp.31-47, 1999.
DOI : 10.1016/S0167-9457(98)00032-3

L. Marin, B. G. Bardy, and R. J. Bootsma, Level of gymnastic skill as an intrinsic constraint on postural coordination, Journal of Sports Sciences, vol.18, issue.8, pp.615-626, 1999.
DOI : 10.1080/026404199365641

G. Mccollum and T. K. Leen, Form and Exploration of Mechanical Stability Limits in Erect Stance, Journal of Motor Behavior, vol.14, issue.3, pp.225-244, 1989.
DOI : 10.1080/00222895.1989.10735479

F. Mechsner, A Perceptual-Cognitive Approach to Bimanual Coordination, 2004.
DOI : 10.1007/978-3-540-39676-5_10

F. Mechsner, D. Kerzel, G. Knoblich, and W. Prinz, Perceptual basis of bimanual coordination, Nature, vol.414, issue.6859, pp.69-73, 2001.
DOI : 10.1038/35102060

A. Monno, A. Chardenon, J. J. Temprado, P. G. Zanone, and M. Laurent, Effects of attention on phase transitions between bimanual coordination patterns: a behavioral and cost analysis in humans, Neuroscience Letters, vol.283, issue.2, pp.93-96, 2000.
DOI : 10.1016/S0304-3940(00)00924-1

L. M. Nashner, Fixed patterns of rapid postural responses among leg muscles during stance, Experimental Brain Research, vol.30, issue.1, pp.13-24, 1976.
DOI : 10.1007/BF00237855

L. M. Nashner and G. Mccollum, The organization of human postural movements: A formal basis and experimental synthesis, Behavioral and Brain Sciences, vol.14, issue.01, pp.135-172, 1985.
DOI : 10.1002/cne.901350102

L. M. Nashner, C. L. Shupert, F. B. Horak, and F. O. Black, Chapter 33 Organization of posture controls: an analysis of sensory and mechanical constraints, Progress in Brain Research, vol.80, pp.411-419, 1989.
DOI : 10.1016/S0079-6123(08)62237-2

K. M. Newell, Constraints on the development of coordination Motor development in children: aspects of coordination and control, pp.341-360, 1986.

K. M. Newell, Motor Skill Acquisition, Annual Review of Psychology, vol.42, issue.1, pp.213-237, 1991.
DOI : 10.1146/annurev.ps.42.020191.001241

K. M. Newell, Change in movement and skill: Learning, retention, and transfer, Dexterity and its development, pp.393-430, 1996.

K. M. Newell and P. V. Mcdonald, Learning to Coordinate Redundant Biomechanical Degrees of Freedom, 1994.
DOI : 10.1016/B978-0-12-679270-6.50029-2

K. M. Newell and D. E. Vaillancourt, Dimensional change in motor learning, Human Movement Science, vol.20, issue.4-5, pp.695-715, 2001.
DOI : 10.1016/S0167-9457(01)00073-2

G. Nicolis and I. Prigogine, Self-organization in non-equilibrium systems, 1977.

S. S. Obhi, Bimanual Coordination: An Unbalanced Field of Research, Motor Control, vol.8, issue.2, pp.111-120, 2004.
DOI : 10.1123/mcj.8.2.111

O. Oullier, B. G. Bardy, T. A. Stoffregen, and R. J. Bootsma, Postural coordination in looking and tracking tasks, Human Movement Science, vol.21, issue.2, pp.147-167, 2002.
DOI : 10.1016/S0167-9457(02)00093-3
URL : https://hal.archives-ouvertes.fr/hal-01441377

O. Oullier, B. G. Bardy, T. A. Stoffregen, and R. J. Bootsma, Task-specific Stabilization of Postural Coordination during Stance on a Beam, Motor Control, vol.8, issue.2, pp.174-187, 2004.
DOI : 10.1123/mcj.8.2.174
URL : https://hal.archives-ouvertes.fr/hal-01441296

B. T. Peters, J. M. Haddad, B. C. Heiderscheitc, R. E. Van-emmerik, and J. Hamill, Limitations in the use and interpretation of continuous relative phase, Journal of Biomechanics, vol.36, issue.2, pp.271-274, 2003.
DOI : 10.1016/S0021-9290(02)00341-X

M. H. Raibert, Motor control and learning by the state-space model, 1977.

M. Reuchlin, Psychologie, 1977.

G. E. Riccio and T. A. Stoffregen, Affordances as constraints on the control of stance, Human Movement Science, vol.7, issue.2-4, pp.265-300, 1988.
DOI : 10.1016/0167-9457(88)90014-0

M. A. Riley, M. V. Santana, and M. T. Turvey, Deterministic variability and stability in detuned bimanual rhythmic coordination, Human Movement Science, vol.20, issue.3, pp.343-369, 2001.
DOI : 10.1016/S0167-9457(01)00051-3

D. Ruelle and F. Takens, On the nature of turbulence, Communications in Mathematical Physics, vol.169, issue.3, pp.167-192, 1971.
DOI : 10.1007/BF01646553

R. A. Schmidt, Motor control and learning: A behavioural emphasis, 1982.

R. A. Schmidt and T. Lee, Motor control and learning: A behavioural emphasis, 1998.

R. C. Schmidt and P. Fitzpatrick, Dynamical perspective on motor learning, Advances in Motor Learning and Control, pp.195-223, 1996.

J. P. Scholz and J. A. Kelso, A Quantitative Approach to Understanding the Formation and Change of Coordinated Movement Patterns, Journal of Motor Behavior, vol.33, issue.2, pp.122-144, 1989.
DOI : 10.1080/00222895.1989.10735470

J. Scholz, J. A. Kelso, and G. Schöner, Nonequilibrium phase transitions in coordinated biological motion: Critical slowing down and switching time, Physics Letters A, vol.123, issue.8, pp.390-394, 1987.
DOI : 10.1016/0375-9601(87)90038-7

G. Schöner, Learning and recall in a dynamic theory of coordination patterns, Biological Cybernetics, vol.37, issue.1, pp.39-54, 1989.
DOI : 10.1007/BF00217659

G. Schöner, H. Haken, and J. A. Kelso, A stochastic theory of phase transitions in human hand movement, Biological Cybernetics, vol.65, issue.4, pp.247-257, 1986.
DOI : 10.1007/BF00336995

G. Schöner and J. A. Kelso, A synergetic theory of environmentally-specified and learned patterns of movement coordination, Biological Cybernetics, vol.37, issue.2, pp.71-80, 1988.
DOI : 10.1007/BF00364153

G. Schöner, P. G. Zanone, and J. A. Kelso, Learning as Change of Coordination Dynamics: Theory and Experiment, Journal of Motor Behavior, vol.123, issue.1, pp.29-48, 1992.
DOI : 10.1007/BF00337040

A. Semjen, Qu'y a-t-il de programmé dans les activités motrices ? Les avatars du programme moteur, Science & Motricité, vol.23, pp.48-57, 1994.

D. J. Serrien and S. P. Swinnen, Coordination constraints induced by effector combination under isofrequency and multifrequency conditions., Journal of Experimental Psychology: Human Perception and Performance, vol.23, issue.5, pp.1493-1510, 1997.
DOI : 10.1037/0096-1523.23.5.1493

C. J. Smethurst and R. G. Carson, The acquisition of movement skills: Practice enhances the dynamic stability of bimanual coordination, Human Movement Science, vol.20, issue.4-5, pp.499-529, 2001.
DOI : 10.1016/S0167-9457(01)00065-3

D. Sternad, Debates in dynamics: A dynamical systems perspective on action and perception, Human Movement Science, vol.19, issue.4, pp.407-423, 2000.
DOI : 10.1016/S0167-9457(00)00024-5

S. P. Swinnen and R. G. Carson, The control and learning of patterns of interlimb coordination: past and present issues in normal and disordered control, Acta Psychologica, vol.110, issue.2-3, pp.129-137, 2002.
DOI : 10.1016/S0001-6918(02)00030-6

S. P. Swinnen, T. D. Lee, S. Vershueren, D. J. Serrien, and H. Bogaerds, Interlimb coordination: Learning and transfer under different feedback conditions, Human Movement Science, vol.16, issue.6, pp.749-785, 1997.
DOI : 10.1016/S0167-9457(97)00020-1

S. P. Swinnen, C. B. Walter, T. D. Lee, and D. J. Serrien, Acquiring bimanual skills: Contrasting forms of information feedback for interlimb decoupling., Journal of Experimental Psychology: Learning, Memory, and Cognition, vol.19, issue.6, pp.1328-1344, 1993.
DOI : 10.1037/0278-7393.19.6.1328

S. P. Swinnen, D. E. Young, C. B. Walter, and D. J. Serrien, Control of asymmetrical bimanual movements, Experimental Brain Research, vol.85, issue.1, pp.163-173, 1991.
DOI : 10.1007/BF00229998

J. J. Temprado, A Dynamical Approach to the Interplay of Attention and Bimanual Coordination, Coordination dynamics: Issues and trends, pp.21-39, 2004.
DOI : 10.1007/978-3-540-39676-5_2

J. J. Temprado, P. G. Zanone, A. Monno, and M. Laurent, Attentional load associated with performing and stabilizing preferred bimanual patterns., Journal of Experimental Psychology: Human Perception and Performance, vol.25, issue.6, pp.1579-1594, 1999.
DOI : 10.1037/0096-1523.25.6.1579

B. Tuller and J. A. Kelso, Environmentally-specified patterns of movement coordination in normal and split-brain subjects, Experimental Brain Research, vol.75, issue.2, pp.306-316, 1989.
DOI : 10.1007/BF00247936

M. T. Turvey, Coordination., American Psychologist, vol.45, issue.8, pp.938-953, 1990.
DOI : 10.1037/0003-066X.45.8.938

M. T. Turvey, H. L. Fitch, and B. Tuller, The Bernstein perspective: I. The problems of degrees of freedom and context ? coordinations variability, 1982.

. Kelso, Human motor behavior, pp.239-252

M. T. Turvey, R. E. Shaw, and W. Mace, Issues in the theory of action: Degrees of freedom, coordinative structures and coalitions, Attention and performance, pp.557-595, 1978.

S. M. Verschueren, S. P. Swinnen, R. Dom, and W. De-weerdt, Interlimb coordination in patients with Parkinson???s disease: motor learning deficits and the importance of augmented information feedback, Experimental Brain Research, vol.113, issue.3, pp.497-508, 1997.
DOI : 10.1007/PL00005602

E. Von-holst, The behavioral physiology of animal and man: The collected papers of Coral Gables, Erich von Holst (R. Martin, Trans.), vol.1, 1937.

C. B. Walter and S. P. Swinnen, Adaptive Tuning of Interlimb Attraction to Facilitate Bimanual Decoupling, Journal of Motor Behavior, vol.22, issue.1, pp.95-104, 1992.
DOI : 10.1016/0278-2626(90)90028-M

C. B. Walter and S. P. Swinnen, The Formation and Dissolution of ???Bad Habits??? during the Acquisition of Coordination Skills, 1994.
DOI : 10.1016/B978-0-12-679270-6.50028-0

. Casaer, Interlimb coordination: Neural, dynamical, and cognitive constraints (pp. 491-513)

N. Wenderoth and O. Bock, Learning of a New Bimanual Coordination Pattern Is Governed by Three Distinct Processes, Motor Control, vol.5, issue.1, pp.23-35, 2001.
DOI : 10.1123/mcj.5.1.23

N. Wenderoth, O. Bock, and R. Krohn, Learning a New Bimanual Coordination Pattern Is Influenced by Existing Attractors, Motor Control, vol.6, issue.2, pp.166-182, 2002.
DOI : 10.1123/mcj.6.2.166

D. A. Winter, Biomechanics and Motor Control of Human Movement, 1990.
DOI : 10.1002/9780470549148

G. Wulf and W. Prinz, Directing attention to movement effects enhances learning: A review, Psychonomic Bulletin & Review, vol.24, issue.4, pp.648-660, 2001.
DOI : 10.3758/BF03196201

J. Yamanishi, M. Kawato, and R. Suzuki, Two coupled oscillators as a model for the coordinated finger tapping by both hands, Biological Cybernetics, vol.33, issue.4, pp.219-225, 1980.
DOI : 10.1007/BF00337040

F. Zaal, G. Bingham, R. Schmidt, and C. Richard, Visual perception of mean relative phase and phase variability., Journal of Experimental Psychology: Human Perception and Performance, vol.26, issue.3, pp.1209-1220, 2000.
DOI : 10.1037/0096-1523.26.3.1209

P. G. Zanone and J. A. Kelso, Evolution of behavioral attractors with learning: Nonequilibrium phase transitions., Journal of Experimental Psychology: Human Perception and Performance, vol.18, issue.2, pp.403-421, 1992.
DOI : 10.1037/0096-1523.18.2.403

P. G. Zanone and J. A. Kelso, Learning and transfert as dynamical paradigms for behavioural change, Tutorial in motor behavior II, pp.563-582, 1992.

P. G. Zanone and J. A. Kelso, The Coordination Dynamics of Learning, 1994.
DOI : 10.1016/B978-0-12-679270-6.50027-9

P. G. Zanone and J. A. Kelso, Coordination dynamics of learning and transfer: Collective and component levels., Journal of Experimental Psychology: Human Perception and Performance, vol.23, issue.5, pp.1454-1480, 1997.
DOI : 10.1037/0096-1523.23.5.1454

P. G. Zanone and V. Kostrubiec, Searching for (Dynamic) Principles of Learning, Coordination dynamics: Issues and trends, pp.57-89, 2004.
DOI : 10.1007/978-3-540-39676-5_4

P. G. Zanone, A. Monno, J. J. Temprado, and M. Laurent, Shared dynamics of attentional cost and pattern stability, Human Movement Science, vol.20, issue.6, pp.765-789, 2001.
DOI : 10.1016/S0167-9457(01)00055-0