@article{DE_1969_5_4_a9,
     author = {\`E. I. Grudo},
     title = {On the analytic theory of ordinary differential equations with deviating argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {700--711},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_4_a9/}
}