@article{DE_1990_26_5_a16,
     author = {A. A. Karelin},
     title = {On the solvability and structure of the solution space of singular integral equations with involution},
     journal = {Differencialʹnye uravneni\^a},
     pages = {879--890},
     publisher = {mathdoc},
     volume = {26},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_5_a16/}
}