Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1994_30_12_a19, author = {V. V. Trefilov}, title = {On a system of basis functions for linear differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {2186--2187}, publisher = {mathdoc}, volume = {30}, number = {12}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1994_30_12_a19/} }
V. V. Trefilov. On a system of basis functions for linear differential equations. Differencialʹnye uravneniâ, Tome 30 (1994) no. 12, pp. 2186-2187. http://geodesic.mathdoc.fr/item/DE_1994_30_12_a19/