@article{DE_1986_22_2_a14,
     author = {E. A. Ivanov},
     title = {A general mixed problem of diffraction of a plane electromagnetic wave falling obliquely on a circular opening in a flat screen between two media},
     journal = {Differencialʹnye uravneni\^a},
     pages = {298--304},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_2_a14/}
}