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@article{DAN_1964_156_2_a1, author = {M. I. Vishik and G. I. \`Eskin}, title = {Singular elliptic equations and systems of variable order}, journal = {Doklady Akademii Nauk}, pages = {243--246}, publisher = {mathdoc}, volume = {156}, number = {2}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a1/} }
M. I. Vishik; G. I. Èskin. Singular elliptic equations and systems of variable order. Doklady Akademii Nauk, Tome 156 (1964) no. 2, pp. 243-246. http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a1/