@article{DE_1969_5_3_a19,
     author = {V. I. Tivonchuk},
     title = {The solution of nonlinear integral equations of mixed type by the method of averaging functional corrections},
     journal = {Differencialʹnye uravneni\^a},
     pages = {568--573},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a19/}
}