Effect of refractory additives on coercivity of sintered (Nd, Dy)(Fe, Co) BM magnets (M=Cr/W/Zr/Nb/Ta) (abstract) : The 5th Joint MMM−Intermag Conference - Lin, K. D.; Tzuoo, U. C.; Tung, J. Y.; Chin, T. S. (American Institute of Physics (AIP), 1991)
http://dx.doi.org/10.1063/1.349947
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