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@article{IVM_1992_1_a16, author = {L. G. Labsker}, title = {Testing and distinguishing sets in {Banach} spaces}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {102--105}, publisher = {mathdoc}, number = {1}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1992_1_a16/} }
L. G. Labsker. Testing and distinguishing sets in Banach spaces. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1992), pp. 102-105. http://geodesic.mathdoc.fr/item/IVM_1992_1_a16/