@article{DE_1972_8_3_a14,
     author = {M. K. Bugir},
     title = {The decomposition of {G.~P\'olya} and {G.~Mammana} for a system of equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {529--530},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_3_a14/}
}