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IMPACT-2013 > 241 - 245
IEEE Translation Journal on Magnetics in Japan > 1993 > 8 > 10 > 674 - 679
IEEE Translation Journal on Magnetics in Japan > 1991 > 6 > 4 > 284 - 291
IEEE Circuits and Systems Magazine > 1983 > 5 > 2 > 9 - 11
Transactions of the American Institute of Electrical Engineers > 1951 > 70 > 1 > 292 - 298