@article{1214433845, author = {Tromba, A. J.}, title = {A general approach to Morse theory}, journal = {J. Differential Geom.}, volume = {12}, number = {1}, year = {1977}, pages = { 47-85}, language = {en}, url = {http://dml.mathdoc.fr/item/1214433845} }
Tromba, A. J. A general approach to Morse theory. J. Differential Geom., Tome 12 (1977) no. 1, pp. 47-85. http://gdmltest.u-ga.fr/item/1214433845/