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@article{IVM_1964_5_a18, author = {G. \v{S}pak}, title = {A method for obtaining estimates of functions taking given values at prescribed points}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {127--136}, publisher = {mathdoc}, number = {5}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1964_5_a18/} }
G. Špak. A method for obtaining estimates of functions taking given values at prescribed points. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1964), pp. 127-136. http://geodesic.mathdoc.fr/item/IVM_1964_5_a18/