Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1975_11_12_a3, author = {L. F. Rakhmatullina}, title = {The canonical forms of linear functional-differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {2143--2153}, publisher = {mathdoc}, volume = {11}, number = {12}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_12_a3/} }
L. F. Rakhmatullina. The canonical forms of linear functional-differential equations. Differencialʹnye uravneniâ, Tome 11 (1975) no. 12, pp. 2143-2153. http://geodesic.mathdoc.fr/item/DE_1975_11_12_a3/