@article{DE_1983_19_10_a7,
     author = {L. S. Koplienko and B. A. Plamenevskii},
     title = {The radiation principle for periodic problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1713--1723},
     publisher = {mathdoc},
     volume = {19},
     number = {10},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_10_a7/}
}