@article{DE_1974_10_6_a19,
     author = {A. N. Filatov and K. Khekimov},
     title = {Certain algorithms for the construction of higher approximations for systems of integro-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1139--1141},
     publisher = {mathdoc},
     volume = {10},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_6_a19/}
}