@article{IVM_1972_5_a1,
     author = {V. A. Belyaev and P. P. Korovkin},
     title = {The inverse problem of overconvergence of polynomial series},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {11--14},
     publisher = {mathdoc},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_5_a1/}
}