1. Skilling, H. H.Electric Transmission Lines(McGraw-Hill Book Co.), 1951, pp. 18–36 and 312–25.
2. Karakash, J. J.Transmission Lines and Filter Networks(McMillan Book Co.), 1950, pp. 40–57.
3. Selgin, P. J.Electrical Transmission in Steady State(McGraw-Hill Book Co.), 1947, pp. 88–109 and 231–47.
4. Johnson, W. C.Transmission Lines and Networks(McGraw-Hill Book Co.), 1950, pp. 93–97 and 144–79.