%0 Journal Article %A Günter F. Steinke %T 4-dimensional Minkowski planes with large automorphism group. %J Forum mathematicum %D 1992 %P 593-606 %V 4 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141693/ %F FORUM_1992__4_6_141693