@Article{ authors = " Andrzej Nowakowski", title = "On Approximation of Increasing Functions on an Interval by Analytic Functions Univalent on Narrow Strips : Variation of Holomorphic Functions with Real Coefficients ", journal = "Bulletin de la Société des Science et des Lettres de Łódź. Serie: Recherches sur les Déformations", issue = "1985 / Numer 8", pages = "1 - 15" }