@article{DE_1970_6_7_a14,
     author = {O. A. Liskovets},
     title = {Regularization of equations with a closed linear operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1273--1278},
     publisher = {mathdoc},
     volume = {6},
     number = {7},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_7_a14/}
}