@article{DE_1985_21_3_a26,
     author = {M. V. Fedoryuk and A. M. Nurmagomedov},
     title = {The {Neumann} problem for the {Helmholtz} equation in the exterior of an infinite cylinder},
     journal = {Differencialʹnye uravneni\^a},
     pages = {534--535},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_3_a26/}
}