Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1976_12_2_a23, author = {V. G. Raskin}, title = {The solvability of operator-differential equations of arbitrary order}, journal = {Differencialʹnye uravneni\^a}, pages = {362--364}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_2_a23/} }
V. G. Raskin. The solvability of operator-differential equations of arbitrary order. Differencialʹnye uravneniâ, Tome 12 (1976) no. 2, pp. 362-364. http://geodesic.mathdoc.fr/item/DE_1976_12_2_a23/