Deep, K., A. R. Abhyankar, and B. K. Panigrahi. “A Bottleneck-Free Bidding Zone Configuration Approach Qualification”. Power Research - A Journal of CPRI, Mar. 2016, pp. 23-34, https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/221.