@article{DE_1998_34_3_a20,
     author = {A. D. Chernyshov},
     title = {Exact solutions of the problem of the oscillations of complex fields in an angular domain},
     journal = {Differencialʹnye uravneni\^a},
     pages = {425--427},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_3_a20/}
}