@article{SM_1991_70_1_a15,
     author = {S. I. Fedorov},
     title = {Harmonic analysis in a~multiply-connected {domain.~I}},
     journal = {Sbornik. Mathematics},
     pages = {263--296},
     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1991_70_1_a15/}
}