Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1998_220_a8, author = {A. F. Izmailov}, title = {Some generalizations of the {Morse} lemma}, journal = {Informatics and Automation}, pages = {142--156}, publisher = {mathdoc}, volume = {220}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1998_220_a8/} }
A. F. Izmailov. Some generalizations of the Morse lemma. Informatics and Automation, Optimal control, differential equations and smooth optimization, Tome 220 (1998), pp. 142-156. http://geodesic.mathdoc.fr/item/TRSPY_1998_220_a8/