@article{MZM_1993_53_2_a13,
     author = {E. A. Rovba},
     title = {Interpolation rational operators of {Fej\'er} and de la {Vall\'ee-Poussin} type},
     journal = {Matemati\v{c}eskie zametki},
     pages = {114--121},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_53_2_a13/}
}