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@article{IVM_1963_6_a17, author = {S. N. Slugin}, title = {Some partially ordered objects in the theory of approximation methods}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {138--151}, publisher = {mathdoc}, number = {6}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1963_6_a17/} }
S. N. Slugin. Some partially ordered objects in the theory of approximation methods. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1963), pp. 138-151. http://geodesic.mathdoc.fr/item/IVM_1963_6_a17/