Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1977_8_a14, author = {S. E. Landa}, title = {An equivalence condition for dynamical systems on two-dimensional manifolds}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {102--104}, publisher = {mathdoc}, number = {8}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1977_8_a14/} }
S. E. Landa. An equivalence condition for dynamical systems on two-dimensional manifolds. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1977), pp. 102-104. http://geodesic.mathdoc.fr/item/IVM_1977_8_a14/