"What is a Strong Magnet?". The Magnetic Matters Blog. Adams Magnetic Products. October 5, 2012. Diarsipkan dari versi asli tanggal 2016-03-26. Diakses tanggal October 12, 2012.
M. Sagawa; S. Fujimura; N. Togawa; H. Yamamoto; Y. Matsuura (1984). "New material for permanent magnets on a base of Nd and Fe (invited)". Journal of Applied Physics. 55 (6): 2083. Bibcode:1984JAP....55.2083S. doi:10.1063/1.333572.
J. J. Croat; J. F. Herbst; R. W. Lee; F. E. Pinkerton (1984). "Pr‐Fe and Nd‐Fe‐based materials: A new class of high‐performance permanent magnets (invited)". Journal of Applied Physics. 55 (6): 2078. doi:10.1063/1.333571.
M. Sagawa; S. Fujimura; N. Togawa; H. Yamamoto; Y. Matsuura (1984). "New material for permanent magnets on a base of Nd and Fe (invited)". Journal of Applied Physics. 55 (6): 2083. Bibcode:1984JAP....55.2083S. doi:10.1063/1.333572.
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"What is a Strong Magnet?". The Magnetic Matters Blog. Adams Magnetic Products. October 5, 2012. Diarsipkan dari versi asli tanggal 2016-03-26. Diakses tanggal October 12, 2012.