%0 Journal Article %A Z. J. Jakubowski %A A. ZieliƄska %A K. Zyskowska %T Sharp estimation of even coefficients of bounded symmetric univalent functions %J Annales Polonici Mathematici %D 1981 %P 193-206 %V 40 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-40-2-193-206/ %R 10.4064/ap-40-2-193-206 %G en %F 10_4064_ap_40_2_193_206