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@article{DAN_1973_209_2_a9, author = {S. G. Mikhlin}, title = {Some approximation problems in the variational-difference method}, journal = {Doklady Akademii Nauk}, pages = {299--301}, publisher = {mathdoc}, volume = {209}, number = {2}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_2_a9/} }
S. G. Mikhlin. Some approximation problems in the variational-difference method. Doklady Akademii Nauk, Tome 209 (1973) no. 2, pp. 299-301. http://geodesic.mathdoc.fr/item/DAN_1973_209_2_a9/