Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1967_3_8_a15, author = {I. G. Lobodzinskaya}, title = {Boundary value problems for the equation $\Delta^mu=0$}, journal = {Differencialʹnye uravneni\^a}, pages = {1355--1363}, publisher = {mathdoc}, volume = {3}, number = {8}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_8_a15/} }
I. G. Lobodzinskaya. Boundary value problems for the equation $\Delta^mu=0$. Differencialʹnye uravneniâ, Tome 3 (1967) no. 8, pp. 1355-1363. http://geodesic.mathdoc.fr/item/DE_1967_3_8_a15/