@article{DE_1982_18_12_a0,
     author = {N. V. Azbelev and V. P. Maksimov},
     title = {Equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2027--2050},
     publisher = {mathdoc},
     volume = {18},
     number = {12},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_12_a0/}
}