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@article{IVM_1997_1_a5, author = {V. P. Orlov}, title = {Weakly degenerate differential equations with an unbounded operator coefficient}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {34--41}, publisher = {mathdoc}, number = {1}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1997_1_a5/} }
V. P. Orlov. Weakly degenerate differential equations with an unbounded operator coefficient. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1997), pp. 34-41. http://geodesic.mathdoc.fr/item/IVM_1997_1_a5/