Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1990__26_2-3_a4, author = {Conti, Roberto}, title = {On centers of type $B$ of polynomial systems}, journal = {Archivum mathematicum}, pages = {93--99}, publisher = {mathdoc}, volume = {26}, number = {2-3}, year = {1990}, mrnumber = {1188267}, zbl = {0732.34027}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1990__26_2-3_a4/} }
Conti, Roberto. On centers of type $B$ of polynomial systems. Archivum mathematicum, Tome 26 (1990) no. 2-3, pp. 93-99. http://geodesic.mathdoc.fr/item/ARM_1990__26_2-3_a4/