@article{1183525794, author = {Palais, R. S. and Smale, S.}, title = {A generalized Morse theory}, journal = {Bull. Amer. Math. Soc.}, volume = {70}, number = {6}, year = {1964}, pages = { 165-172}, language = {en}, url = {http://dml.mathdoc.fr/item/1183525794} }
Palais, R. S.; Smale, S. A generalized Morse theory. Bull. Amer. Math. Soc., Tome 70 (1964) no. 6, pp. 165-172. http://gdmltest.u-ga.fr/item/1183525794/