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@article{DAN_1981_257_1_a8, author = {P. I. Lizorkin and S. M. Nikol'skii}, title = {An elliptic equation with degeneracy. {A} variational method}, journal = {Doklady Akademii Nauk}, pages = {42--45}, publisher = {mathdoc}, volume = {257}, number = {1}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1981_257_1_a8/} }
P. I. Lizorkin; S. M. Nikol'skii. An elliptic equation with degeneracy. A variational method. Doklady Akademii Nauk, Tome 257 (1981) no. 1, pp. 42-45. http://geodesic.mathdoc.fr/item/DAN_1981_257_1_a8/