@article{DE_1970_6_8_a4,
     author = {M. V. Dolov},
     title = {Canonical integrals and singular cycles},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1378--1383},
     publisher = {mathdoc},
     volume = {6},
     number = {8},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_8_a4/}
}