Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1988_44_2_a4, author = {V. F. Lazutkin}, title = {Signature of invertible symmetric matrices}, journal = {Matemati\v{c}eskie zametki}, pages = {202--207}, publisher = {mathdoc}, volume = {44}, number = {2}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1988_44_2_a4/} }
V. F. Lazutkin. Signature of invertible symmetric matrices. Matematičeskie zametki, Tome 44 (1988) no. 2, pp. 202-207. http://geodesic.mathdoc.fr/item/MZM_1988_44_2_a4/