@article{DE_1994_30_7_a9,
     author = {P. N. Vabishchevich and P. P. Matus and V. S. Shchehlik},
     title = {Operator-difference equations of divergence type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1175--1186},
     publisher = {mathdoc},
     volume = {30},
     number = {7},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_7_a9/}
}