@article{DE_1985_21_8_a12,
     author = {V. I. Elkin},
     title = {General solution of systems of partial differential equations with identical principal part},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1389--1398},
     publisher = {mathdoc},
     volume = {21},
     number = {8},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_8_a12/}
}