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@article{DAN_1969_187_5_a7, author = {B. K. Pchelin}, title = {On the general theory of polyharmonic functions}, journal = {Doklady Akademii Nauk}, pages = {993--994}, publisher = {mathdoc}, volume = {187}, number = {5}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_5_a7/} }
B. K. Pchelin. On the general theory of polyharmonic functions. Doklady Akademii Nauk, Tome 187 (1969) no. 5, pp. 993-994. http://geodesic.mathdoc.fr/item/DAN_1969_187_5_a7/