1. Alexander, G. E., & Andrichak, J. G. (1996). Application of phase and ground distance relays to three terminal relays. Technical report, GE Protection & Control Malvern.
2. Alexander, G. E., Andrichak, J. G., Malvern, P. A., & Annual, N. (1991). Ground distance relaying: Problems and principles. In Eighteenth annual western protective relaying conference, October.
3. Benmouyal, G. (1995). Removal of DC-offset in current waveforms using digital mimic filtering. IEEE Transactions on Power Delivery, 10(2), 621–630.
4. Calero, F. (2007). Mutual impedance in parallel lines—Protective relaying and fault location considerations. In 34th annual western protective relay conference.
5. Calero, F., Guzman, A., & Benmouyal, G. (2010). Adaptive phase and ground quadrilateral distance elements. Technical report, Schweitzer Engineering Laboratories.