Okon, T., and K. Wilkosz. “Power System Topology Verification With Use of Reduced Unbalance Indices”. Elektronika ir Elektrotechnika 20, no. 9 (November 17, 2014): 9-12. Accessed April 26, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/8708.