@article{01780500,
title = {A Morse lemma for degenerate critical points with low differentiability.},
journal = {Abstract and Applied Analysis},
volume = {5},
year = {2000},
pages = {113-118},
doi = {10.1155/S1085337500000245},
zbl = {1017.58007},
language = {en},
url = {http://dml.mathdoc.fr/item/01780500}
}
De Moura, Adriano A.; De Souza, Fausto M. A Morse lemma for degenerate critical points with low differentiability.. Abstract and Applied Analysis, Tome 5 (2000) pp. 113-118. doi : 10.1155/S1085337500000245. http://gdmltest.u-ga.fr/item/01780500/