Geodesic
Rational approximation of continuous functions of finite variation
Izvestiya. Mathematics , Tome 9 (1975) no. 5, pp. 1081-1118

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In this paper, a bound is established for the least uniform deviation of rational functions from a continuous function of bounded variation with a given modulus of continuity. It is shown that the bound obtained is sharp. Bibliography: 8 titles. 
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     author = {A. P. Bulanov},
     title = {Rational approximation of continuous functions of finite variation},
     journal = {Izvestiya. Mathematics },
     pages = {1081--1118},
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     number = {5},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1975_9_5_a7/}
}
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A. P. Bulanov. Rational approximation of continuous functions of finite variation. Izvestiya. Mathematics , Tome 9 (1975) no. 5, pp. 1081-1118. http://geodesic.mathdoc.fr/item/IM2_1975_9_5_a7/