M. TAKATA, N. V. VUONG, D. M. THUY, N. T. HIEU, and L. T. TU, “Nd-Fe-B MELT - SPUN POWDER QUALITY ESTIMATION BASED ON STONER - WOHLFARTH MODEL”, Comm. Phys., vol. 14, no. 1, p. 36, Apr. 2007.