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@article{KUIPM_1979_a5, author = {S. N. Perfilov and R. F. Khabibullin}, title = {Problem of optimality of iteration processes}, journal = {Issledovaniya po Prikladnoi Matematike i Informatike}, pages = {41--50}, publisher = {mathdoc}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUIPM_1979_a5/} }
S. N. Perfilov; R. F. Khabibullin. Problem of optimality of iteration processes. Issledovaniya po Prikladnoi Matematike i Informatike, Issledovaniya po Prikladnoi Matematike (1979), pp. 41-50. http://geodesic.mathdoc.fr/item/KUIPM_1979_a5/