Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1962_145_5_a5, author = {P. P. Zabreiko}, title = {On calculating the {Poincar\'e} index}, journal = {Doklady Akademii Nauk}, pages = {979--982}, publisher = {mathdoc}, volume = {145}, number = {5}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a5/} }
P. P. Zabreiko. On calculating the Poincar\'e index. Doklady Akademii Nauk, Tome 145 (1962) no. 5, pp. 979-982. http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a5/