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fulltext accessible on an other server Combinatorial Stacks and the Four-Colour Theorem
Attal R.
[hal-00011261 - version 1] (2005-10-13)
fulltext accessible on an other server Combinatorics of Non-Abelian Gerbes with Connection and Curvature
Attal R.
Annales de la Fondation Louis de Broglie 29 (2004) 609-634 [hal-00011260 - version 1]
fulltext accessible on an other server Two-dimensional parallel transport : combinatorics and functoriality
Attal R.
[hal-00011259 - version 1] (2005-10-13)