@article{DAN_1989_307_4_a10,
     author = {P. M. Yuditskii},
     title = {On the upper envelope of a family of rational functions, not},
     journal = {Doklady Akademii Nauk},
     pages = {815--818},
     publisher = {mathdoc},
     volume = {307},
     number = {4},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a10/}
}