%0 Journal Article %A Paulina Pych %T On a biharmonic function in the unit disc %J Annales Polonici Mathematici %D 1968 %P 203-213 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-20-3-203-213/ %R 10.4064/ap-20-3-203-213 %G en %F 10_4064_ap_20_3_203_213