Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1980_16_1_a14, author = {V. K. Romanko}, title = {The conjugation problem for operator-differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {124--134}, publisher = {mathdoc}, volume = {16}, number = {1}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1980_16_1_a14/} }
V. K. Romanko. The conjugation problem for operator-differential equations. Differencialʹnye uravneniâ, Tome 16 (1980) no. 1, pp. 124-134. http://geodesic.mathdoc.fr/item/DE_1980_16_1_a14/