Rao, J. Ganeswara; Pradhan, Ashok Kumar: 'Supervising distance relay during power swing using synchrophasor measurements', IET Generation, Transmission & Distribution, 2017, 11, (17), p. 4136-4145, DOI: 10.1049/iet-gtd.2016.1110
IET Digital Library, https://digital-library.theiet.org/;jsessionid=2gkdjoj27q7q9.x-iet-live-01content/journals/10.1049/iet-gtd.2016.1110