@article{IVM_1980_8_a8,
     author = {S. A. Pichugov},
     title = {Exact constant of approximation in the mean of {Liouville's} class by entire functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {63--65},
     publisher = {mathdoc},
     number = {8},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1980_8_a8/}
}