HAIRI, M. H. Dual-Slope Percentage Bias Differential Relay (87) Protection Strategy for 11kV Underground Power Cable. International Journal of Electrical Engineering and Applied Sciences (IJEEAS), [S. l.], v. 3, n. 1, p. 39–42, 2020. Disponível em: https://ijeeas.utem.edu.my/ijeeas/article/view/5778. Acesso em: 25 may. 2022.