@article{DE_1965_1_4_a11,
     author = {\`E. I. Grudo},
     title = {Investigation of the solutions of a certain class of integro-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {535--544},
     publisher = {mathdoc},
     volume = {1},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_4_a11/}
}