@article{DE_1973_9_7_a11,
     author = {A. G. Terent'ev and T. Ya. Shishova},
     title = {Certain methods of investigating equations with deviating argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1275--1280},
     publisher = {mathdoc},
     volume = {9},
     number = {7},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_7_a11/}
}