@article{DAN_1990_314_6_a22, author = {A. R. Maikov and A. G. Sveshnikov and S. A. Yakunin}, title = {Nonlocal radiation conditions for a nonstationary system of}, journal = {Doklady Akademii Nauk}, pages = {1375--1379}, publisher = {mathdoc}, volume = {314}, number = {6}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_6_a22/} }