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@article{AIHPA_1977__27_1_101_0, author = {Tulczyjew, W. M.}, title = {The {Legendre} transformation}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {101--114}, publisher = {Gauthier-Villars}, volume = {27}, number = {1}, year = {1977}, mrnumber = {494271}, zbl = {0365.58011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1977__27_1_101_0/} }
Tulczyjew, W. M. The Legendre transformation. Annales de l'I.H.P. Physique théorique, Tome 27 (1977) no. 1, pp. 101-114. http://geodesic.mathdoc.fr/item/AIHPA_1977__27_1_101_0/