@article{DE_1978_14_3_a23,
     author = {N. A. Sidorov},
     title = {Regularization of linear differential equations with constant operators in the degenerate case},
     journal = {Differencialʹnye uravneni\^a},
     pages = {556--560},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_3_a23/}
}