@article{AIHPA_1977__27_1_101_0, author = {Tulczyjew, W. M.}, title = {The {Legendre} transformation}, journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique}, pages = {101--114}, publisher = {Gauthier-Villars}, volume = {27}, number = {1}, year = {1977}, mrnumber = {494271}, zbl = {0365.58011}, language = {en}, url = {http://www.numdam.org/item/AIHPA_1977__27_1_101_0/} }