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@article{IVM_1964_1_a0, author = {P. K. Belobrov}, title = {On the {Chebyshev} center of a set}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--9}, publisher = {mathdoc}, number = {1}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1964_1_a0/} }
P. K. Belobrov. On the Chebyshev center of a set. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1964), pp. 3-9. http://geodesic.mathdoc.fr/item/IVM_1964_1_a0/