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@article{IVM_1966_2_a13, author = {Ya. M. Tseitlin}, title = {Unconditionality of a~basis and partial order}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {98--104}, publisher = {mathdoc}, number = {2}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1966_2_a13/} }
Ya. M. Tseitlin. Unconditionality of a~basis and partial order. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1966), pp. 98-104. http://geodesic.mathdoc.fr/item/IVM_1966_2_a13/