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@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/} }
P. M. Yuditskii. On the upper envelope of a family of rational functions, not. Doklady Akademii Nauk, Tome 307 (1989) no. 4, pp. 815-818. http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a10/