@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/