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@article{IVM_1981_11_a5, author = {N. S. Raspopova}, title = {The quasireversibility method for a~second-order equation in {a~Banach} space}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {38--42}, publisher = {mathdoc}, number = {11}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1981_11_a5/} }
N. S. Raspopova. The quasireversibility method for a~second-order equation in a~Banach space. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1981), pp. 38-42. http://geodesic.mathdoc.fr/item/IVM_1981_11_a5/