@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/}
}