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@article{IVM_1968_9_a9, author = {V. P. Khavin}, title = {Polynomial approximation in the mean in certain non {Carath\'eodory} {regions.~I}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {86--93}, publisher = {mathdoc}, number = {9}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1968_9_a9/} }
V. P. Khavin. Polynomial approximation in the mean in certain non Carathéodory regions.~I. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1968), pp. 86-93. http://geodesic.mathdoc.fr/item/IVM_1968_9_a9/