Beeler, Robert, Gardner, Robert, Gwellem, Chrysanthus, & Lewenczuk, Jan. (2016). Decompositions, packings, and coverings of the complete digraph with orientations of K3 ∪{e}. Utilitas Mathematica, 100. Retrieved from https://utilitasmathematica.com/index.php/Index/article/view/1106