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ON THE APPROXIMATION OF $ x^alpha$ BY RATIONAL FUNCTIONSVjačeslavov, N S · Mathematics of the USSR-Izvestiya · 1981
ON THE LEAST DEVIATIONS OF THE FUNCTION $ operatorname{sign} x$ AND ITS PRIMITIVES FROM THE RATIONAL FUNCTIONS IN THE $ L_p$ METRICS, $ 0 < p leqslant infty$Vjačeslavov, N S · Mathematics of the USSR-Sbornik · 1977