%0 Journal Article %A Rainer Löwen %T Actions of SO(3) on 4-dimensional stable planes. %J Aequationes mathematicae %D 1986 %P 212-222 %V 30 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1986__30_137129/ %F AM2_1986__30_137129