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@article{DAN_1961_139_5_a5, author = {P. I. Lizorkin}, title = {The {Green's} $E$-function of a {Beltrami} operator and some variational problems}, journal = {Doklady Akademii Nauk}, pages = {1052--1055}, publisher = {mathdoc}, volume = {139}, number = {5}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a5/} }
P. I. Lizorkin. The Green's $E$-function of a Beltrami operator and some variational problems. Doklady Akademii Nauk, Tome 139 (1961) no. 5, pp. 1052-1055. http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a5/