%0 Journal Article %A Ho, Pak %T The projective plane crossing number of the circulant graph C(3k;{1,k}) %J Discussiones Mathematicae. Graph Theory %D 2012 %P 91-108 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2012_32_1_a7/ %G en %F DMGT_2012_32_1_a7