%0 Journal Article %A N. Anghel %T Concurrency and Collinearity in Hexagons %J Journal for geometry and graphics %D 2016 %P 159-171 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2016_20_2_JGG_2016_20_2_a1/ %F JGG_2016_20_2_JGG_2016_20_2_a1