A Protection Scheme for Multi-Terminal VSC-HVDC Transmission Systems. - Ali Raza 002; Amin Akhtar; Mohsin Jamil; Ghulam Abbas 001; Syed Omer Gilani; Yuchao Liu; Muhammad Nasir Khan; Tahir Izhar; Dianguo Xu 001; Barry W. Williams (IEEE Access, 2018)