Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1975_11_6_a2, author = {G. Ibragim}, title = {On the theory of semi-explicit differential equations with retarded argument}, journal = {Differencialʹnye uravneni\^a}, pages = {975--985}, publisher = {mathdoc}, volume = {11}, number = {6}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_6_a2/} }
G. Ibragim. On the theory of semi-explicit differential equations with retarded argument. Differencialʹnye uravneniâ, Tome 11 (1975) no. 6, pp. 975-985. http://geodesic.mathdoc.fr/item/DE_1975_11_6_a2/