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@article{DE_1979_15_3_a20, author = {V. E. Markevich}, title = {Moving singularities of a system of two second-order differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {553--554}, publisher = {mathdoc}, volume = {15}, number = {3}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_3_a20/} }
V. E. Markevich. Moving singularities of a system of two second-order differential equations. Differencialʹnye uravneniâ, Tome 15 (1979) no. 3, pp. 553-554. http://geodesic.mathdoc.fr/item/DE_1979_15_3_a20/