@article{DE_1980_16_5_a18,
     author = {G. Markhasev},
     title = {Expression of the resolvent of a kernel-sum in terms of the resolvents of the summands},
     journal = {Differencialʹnye uravneni\^a},
     pages = {944--946},
     publisher = {mathdoc},
     volume = {16},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_5_a18/}
}