Milanović, J.V.: 'Damping of the low-frequency oscillations of the generator: dynamic interactions and the effectiveness of the controllers', IEE Proceedings - Generation, Transmission and Distribution, 2002, 149, (6), p. 753-760, DOI: 10.1049/ip-gtd:20020700
IET Digital Library, https://digital-library.theiet.org/;jsessionid=5fxoinxqenkv.x-iet-live-01content/journals/10.1049/ip-gtd_20020700