Stanisław Czapp, Kornel Borowski. “Evaluation of Applicability of Classic Methods of a Fault Loop Impedance Measurement to Circuits With Residual Current Devices”. Acta Energetica, no. 03 (September 30, 2016): 45–58. Accessed May 19, 2024. https://www.actaenergetica.org/index.php/journal/article/view/394.