Okelola, M., A. Yusuff, and C. Awosope. “PRE-FAULT ANALYSIS: AN APPLICATION OF GAUSS-SEIDEL ITERATIVE METHOD TO 330KV TRANSMISSION GRID SYSTEM IN NIGERIA”. LAUTECH Journal of Engineering and Technology, Vol. 3, no. 2, Feb. 2005, pp. 8-15, https://laujet.com/index.php/laujet/article/view/195.