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@article{DAN_1957_116_6_a7, author = {Yu. I. Cherskii}, title = {The reduction of mixed boundary problems to the {Riemannian} boundary problem}, journal = {Doklady Akademii Nauk}, pages = {927--929}, publisher = {mathdoc}, volume = {116}, number = {6}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a7/} }
Yu. I. Cherskii. The reduction of mixed boundary problems to the Riemannian boundary problem. Doklady Akademii Nauk, Tome 116 (1957) no. 6, pp. 927-929. http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a7/