@article{DE_1972_8_7_a15,
     author = {N. S. Borodin and K. S. Mamii},
     title = {A remark on a certain theorem of {Wong}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1302--1304},
     publisher = {mathdoc},
     volume = {8},
     number = {7},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_7_a15/}
}