R. Padmavathi, S. Chandra Kumar. “Signed Total Domatic Number of Directed Circulant Graphs”. International Journal of Emerging Trends in Science and Technology 4, no. 11 (November 30, 2017): 6361–6365. Accessed January 31, 2025. http://igmpublication.com/ijetst.in/index.php/ijetst/article/view/1199.