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@article{DE_1995_31_1_a4, author = {I. G. Egorov}, title = {On the {A{\v\i}zerman} problem for a second-order system}, journal = {Differencialʹnye uravneni\^a}, pages = {30--36}, publisher = {mathdoc}, volume = {31}, number = {1}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1995_31_1_a4/} }
I. G. Egorov. On the A{\v\i}zerman problem for a second-order system. Differencialʹnye uravneniâ, Tome 31 (1995) no. 1, pp. 30-36. http://geodesic.mathdoc.fr/item/DE_1995_31_1_a4/