Blackburn, L. J. (1998). Protective relaying: Principles and applications (2nd ed.). New York: M. Dekker.
Παραπομπή Chicago StyleBlackburn, Lewis J. Protective Relaying: Principles and Applications. 2nd ed. New York: M. Dekker, 1998.
Παραπομπή MLABlackburn, Lewis J. Protective Relaying: Principles and Applications. 2nd ed. New York: M. Dekker, 1998.
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