@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/}
}