@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/}
}