@article{DE_1981_17_6_a1,
     author = {F. E. Lomovtsev},
     title = {Boundary value problems for differential operator equations of uneven order},
     journal = {Differencialʹnye uravneni\^a},
     pages = {973--983},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_6_a1/}
}