1. T. Gonen, “Electric Power Distribution System Engineering,” McGraw Hill, New York NY, 1986.
2. W. Kersting, “Distribution System Modeling and Analysis,” CRC Press, 2002.
3. Federal Power Act – Section 215, 16 U.S. Code § 824o - Electric reliability https://www.govinfo.gov/app/details/USCODE-2010-title16/USCODE-2010-title16-chap12-subchapII-sec824e
4. A. Bergen and V. Vittal, “Power Systems Analysis,” Prentice Hall, Englewood Cliffs, NJ, 2000.
5. J. Grainger and W. Stevenson, “Power Systems Analysis,” McGraw Hill, New York, 1994.