@article{MZM_1996_60_5_a6,
     author = {A. K. Ramazanov},
     title = {Rational approximation with sign-sensitive weight},
     journal = {Matemati\v{c}eskie zametki},
     pages = {715--725},
     publisher = {mathdoc},
     volume = {60},
     number = {5},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_5_a6/}
}