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IEEE Transactions on Industrial Electronics > 2011 > 58 > 9 > 3795 - 3805
IEEE Translation Journal on Magnetics in Japan > 1992 > 7 > 4 > 354 - 359
Transactions of the American Institute of Electrical Engineers. Part III:... > 1962 > 81 > 3 > 700 - 706
Transactions of the American Institute of Electrical Engineers. Part III:... > 1959 > 78 > 3 > 424 - 426
Transactions of the American Institute of Electrical Engineers. Part III:... > 1959 > 78 > 3 > 426 - 431