Mr. B. Senthilkumar, J.Rajeshkumar. “A Semi-Total Domination Number of a Graph”. International Journal on Future Revolution in Computer Science &Amp; Communication Engineering, vol. 5, no. 8, Aug. 2019, pp. 13-15, http://www.ijfrcsce.org/index.php/ijfrcsce/article/view/2005.