%0 Journal Article %A Kazimierz Włodarczyk %T Estimates of derivatives and Schwarz derivatives for generalized Aharonov pairs and determination of the totality of extremal pairs %J Annales Polonici Mathematici %D 1983 %P 167-173 %V 43 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-43-2-167-173/ %R 10.4064/ap-43-2-167-173 %G en %F 10_4064_ap_43_2_167_173