@article{DE_1967_3_5_a5,
     author = {\`E. I. Grudo},
     title = {Solutions of a system of integro-differential equations in the neighborhood of a singular point},
     journal = {Differencialʹnye uravneni\^a},
     pages = {761--770},
     year = {1967},
     volume = {3},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_5_a5/}
}