@article{04144977, title = {The computation of the index of a Morse function at a critical point.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {11}, year = {1988}, pages = {721-726}, doi = {10.1155/S0161171288000870}, zbl = {0698.58016}, language = {en}, url = {http://dml.mathdoc.fr/item/04144977} }
Sakkalis, Takis. The computation of the index of a Morse function at a critical point.. International Journal of Mathematics and Mathematical Sciences, Tome 11 (1988) pp. 721-726. doi : 10.1155/S0161171288000870. http://gdmltest.u-ga.fr/item/04144977/