M. LIZER. Power unit impedance and distance protection functions during faults in the external power grid. Acta Energetica, [S. l.], n. 04, p. 22–41, 2012. DOI: 10.52710/ae.258. Disponível em: https://www.actaenergetica.org/index.php/journal/article/view/258. Acesso em: 17 may. 2024.