Ungrad, H., Winkler, W., Wiszniewski, A., Harrison, P. G., Winkler, W., & Wiszniewski, A. (1995). Protection techniques in electrical energy systems. New York: M. Dekker.
Παραπομπή Chicago StyleUngrad, Helmut, Wilibald Winkler, Andrzej Wiszniewski, Peter G. Harrison, W. Winkler, and A. Wiszniewski. Protection Techniques in Electrical Energy Systems. New York: M. Dekker, 1995.
Παραπομπή MLAUngrad, Helmut, et al. Protection Techniques in Electrical Energy Systems. New York: M. Dekker, 1995.
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