1. (1) BPA: Electromagnetic Transients Program (EMTP) Rule Book (1980-9)
2. (2) L.F. Blume, A. Boyajian, G. Camilli, T.C. Lennox, S. Minneci, and V.M. Montsinger: “Transformer Engineering”, John Wiley & Sons, Inc., New York (1938)
3. (3) E.E. Staff of M.I.T.: Magnetic Circuits and Transformers, John Wiley & Sons, Inc., New York (1943)
4. (4) ????:????????????????????????, ??????????, IP-81-40 (1981-9)