@article{MM_1991_3_2_a2, author = {{\CYRA}. D. Poezd and A. G. Sveshnikov and S. A. Yakunin}, title = {Exact discrete nonstanionary radiation conditions for spherical system of coordinates in absence of azimuthal symmetry}, journal = {Matemati\v{c}eskoe modelirovanie}, pages = {30--41}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MM_1991_3_2_a2/} }