Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_2007_10_a2, author = {V. V. Goldberg and V. V. Lychagin}, title = {Abelian equations and rank problems for planar webs}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {40--75}, publisher = {mathdoc}, number = {10}, year = {2007}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2007_10_a2/} }
V. V. Goldberg; V. V. Lychagin. Abelian equations and rank problems for planar webs. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (2007), pp. 40-75. http://geodesic.mathdoc.fr/item/IVM_2007_10_a2/