Y.  Kim, Yan, T., Choi, T. Y., and Yang, Y., ?A Theory of the Nexus Supplier: A Critical Supplier from a Network Perspective?, Journal of Supply Chain Management, vol. 51, no. 1, pp. 52-66, 2015.

Z.  Wu and Choi, T. Y., ?Triadic Relations in a Game of Pachisi?, Decision Sciences Journal of Innovative Education, vol. 11, no. 4, pp. 305-312, 2013.