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@article{IVM_1974_12_a12, author = {A. Yu. Petrovich}, title = {Riemann sums for functions that are expanded in trigonometric series}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {70--72}, publisher = {mathdoc}, number = {12}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1974_12_a12/} }
A. Yu. Petrovich. Riemann sums for functions that are expanded in trigonometric series. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1974), pp. 70-72. http://geodesic.mathdoc.fr/item/IVM_1974_12_a12/