%0 Journal Article %A C. Thomassen %A R.B. Richter %T Intersections of Curve Systems and the Crossing Number of C5 x C5 . %J Discrete & computational geometry %D 1995 %P 149-160 %V 13 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DCG_1995__13_3-4_131352/ %F DCG_1995__13_3-4_131352