Mutembei, J., Kamaku, W., & Kivunge, B. (2015). Positive P 0,1 Matrix Completion Problem for Digraphs of Order Three with Zero, One, Two and Three Arcs. International Journal of Sciences: Basic and Applied Research (IJSBAR), 24(3), 112–121. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4486