@article{DE_1969_5_12_a4,
     author = {\`E. I. Grudo},
     title = {The solutions of a certain integro-differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2165--2172},
     publisher = {mathdoc},
     volume = {5},
     number = {12},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_12_a4/}
}