1. Anaconda Company, Wire and Cable Division‘Anaconda mining cable engineering handbook’, 1977
2. Ulhmann, E.: Power transmission by direct current, (Springer Verlag, Berlin 1975)
3. Tylavsky, D.J.: ‘Inclusion of a resistance-inductance fed rectifier bus in a Newton-Raphson load flow’, 1982, Ph.D. thesis, Pennsylvania State University