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@article{DAN_1965_160_3_a11, author = {V. R. Portnov}, title = {A theorem on the density of finite functions in weight classes}, journal = {Doklady Akademii Nauk}, pages = {545--548}, publisher = {mathdoc}, volume = {160}, number = {3}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_3_a11/} }
V. R. Portnov. A theorem on the density of finite functions in weight classes. Doklady Akademii Nauk, Tome 160 (1965) no. 3, pp. 545-548. http://geodesic.mathdoc.fr/item/DAN_1965_160_3_a11/