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@article{IVM_1988_10_a3, author = {S. G. Kreǐn and S. Ya. L'vin}, title = {Partially overdetermined and underdetermined elliptic problems}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {15--23}, publisher = {mathdoc}, number = {10}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1988_10_a3/} }
S. G. Kreǐn; S. Ya. L'vin. Partially overdetermined and underdetermined elliptic problems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1988), pp. 15-23. http://geodesic.mathdoc.fr/item/IVM_1988_10_a3/