Brigham, Robert C., Chartrand, Gary, Dutton, Ronald D., Zhang, Ping. On induced subdigraphs of certain distance-defined digraphs. A Canadian journal of applied mathematics, computer science and statistics [Internet]. 2005 Jun. 9 [cited 2026 Feb. 3];68. Available from: https://utilitasmathematica.com/index.php/Index/article/view/366