@article{DE_1978_14_2_a23,
     author = {S. N. Nikitina},
     title = {On solutions for a certain class of systems of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {374--375},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_2_a23/}
}