%0 Journal Article %A J. Urbanowicz %T A free boundary problem for the bicaloric equation %J Commentationes Mathematicae %D 1988 %P 147-153 %V 28 %N 1 %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v28i1.6228/ %R 10.14708/cm.v28i1.6228 %G pl %F 10_14708_cm_v28i1_6228