5DWARAKANATH M H, NOWITZ L. An application of linear graph theory for coordination of directional over-current relays// Proceedings of SIAM on Electric Power Problems: The Mathematical Challenge, March 18-20, 1980, Seattle, WA, USA, 104-114.
6Computer Aided Coordination of Line Protection Schemes Working Group of Power System Relaying Commitment of IEEE PES. Computer aided coordination of line protection schemes: IEEE committee report. IEEE Trans on Power Delivery, 1991, 6(2): 575-583.
7MADANI S M, RIJANTO H. A new application of graph theory for coordination of protective relays. IEEE Power Engineering Review, 1998, 18(6): 43-45.
8MADANI S M, RIJANTO H. Protection coordination:determination of the break point set. IEE Proceedings:Generation, Transmission and Distribution, 1998, 145 (6) :717-721.
9LIN Henming, JOU Jingyang. On computing the minimum feedback vertex set of a directed graph by contraction. IEEE Trans on Computer-aided Design of Integrated Circuits and Systems, 2000, 19(3) : 295-307.
10JAMALI S, SHATERI H. A branch-based method to breakpoint determination for coordination of over-current and distance relays// Proceedings of 2004 International Conference on Power System Technology: Vol 2, November 21-24, 2004, Singapore: 1857-1862.