@article{VNGU_2012_12_1_a6,
     author = {V. I. Kuzovatov and A. M. Kytmanov},
     title = {Reflection principle for solutions of the {Helmholtz} equation in a~half-space},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {102--113},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2012_12_1_a6/}
}