%0 Journal Article
%A N. Anghel 
%T Concurrency in Hexagons -- A Trigonometric Tale
%J Journal for geometry and graphics
%D 2018
%P 21-29
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2018_22_1_JGG_2018_22_1_a2/
%F JGG_2018_22_1_JGG_2018_22_1_a2