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@article{IVM_1969_12_a6, author = {N. E. Lu\v{s}paǐ}, title = {Best quadrature formulae for certain classes of functions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {53--59}, publisher = {mathdoc}, number = {12}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_12_a6/} }
N. E. Lušpaǐ. Best quadrature formulae for certain classes of functions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1969), pp. 53-59. http://geodesic.mathdoc.fr/item/IVM_1969_12_a6/