@article{DE_1993_29_8_a24,
     author = {B. A. Iskenderov and A. I. Mekhtieva},
     title = {Radiation principles for the {Helmholtz} equation in a multidimensional layer with impedance boundary conditions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1462--1464},
     publisher = {mathdoc},
     volume = {29},
     number = {8},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_8_a24/}
}