%0 Journal Article %A M. Filar %T On a certain boundary problem for the equation \(\Delta^2u-C^4u=0\) %J Commentationes Mathematicae %D 1972 %P 83-90 %V 16 %N 1 %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v16i1.5726/ %R 10.14708/cm.v16i1.5726 %G pl %F 10_14708_cm_v16i1_5726