Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1995_31_11_a20, author = {V. P. Derevenskii}, title = {Second-order matrix linear differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1925--1926}, publisher = {mathdoc}, volume = {31}, number = {11}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1995_31_11_a20/} }
V. P. Derevenskii. Second-order matrix linear differential equations. Differencialʹnye uravneniâ, Tome 31 (1995) no. 11, pp. 1925-1926. http://geodesic.mathdoc.fr/item/DE_1995_31_11_a20/