Modeling and Simulation of Out of Step Blocking Relay for Power Swing using Concentric Polygons Scheme. Tikrit Journal of Engineering Sciences, [S. l.], v. 17, n. 1, p. 21–31, 2010. DOI: 10.25130/tjes.17.1.08. Disponível em: https://www.tj-es.com/ojs/index.php/tjes/article/view/542.. Acesso em: 10 sep. 2026.