%0 Journal Article %A Kazimierz Włodarczyk %T Area methods, extremal problems and extremal domains for pairs of conformal mappings %J Annales Polonici Mathematici %D 1985 %P 203-211 %V 45 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-45-3-203-211/ %R 10.4064/ap-45-3-203-211 %G en %F 10_4064_ap_45_3_203_211