Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1978_239_6_a0, author = {A. V. Bitsadze}, title = {On a boundary value problem for the {Helmholtz} equation}, journal = {Doklady Akademii Nauk}, pages = {1273--1275}, publisher = {mathdoc}, volume = {239}, number = {6}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_6_a0/} }
A. V. Bitsadze. On a boundary value problem for the Helmholtz equation. Doklady Akademii Nauk, Tome 239 (1978) no. 6, pp. 1273-1275. http://geodesic.mathdoc.fr/item/DAN_1978_239_6_a0/