Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1977_13_9_a4, author = {A. N. Kochubei}, title = {Fundamental solutions of operator-differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1588--1597}, publisher = {mathdoc}, volume = {13}, number = {9}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1977_13_9_a4/} }
A. N. Kochubei. Fundamental solutions of operator-differential equations. Differencialʹnye uravneniâ, Tome 13 (1977) no. 9, pp. 1588-1597. http://geodesic.mathdoc.fr/item/DE_1977_13_9_a4/