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@article{IVM_2006_1_a10, author = {B. M. Dubrov}, title = {On a class of contact invariants of systems of ordinary differential equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {76--77}, publisher = {mathdoc}, number = {1}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2006_1_a10/} }
B. M. Dubrov. On a class of contact invariants of systems of ordinary differential equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (2006), pp. 76-77. http://geodesic.mathdoc.fr/item/IVM_2006_1_a10/