Drak, M.; Dobrzanski, L.A. «Corrosion of Nd-Fe-B permanent magnets». Journal of Achievements in Materials and Manufacturing Engineering, 20, 1–2, 2007. Arxivat de l'original el 2012-04-02 [Consulta: 4 febrer 2014].
Drak, M.; Dobrzanski, L.A. «Corrosion of Nd-Fe-B permanent magnets». Journal of Achievements in Materials and Manufacturing Engineering, 20, 1–2, 2007. Arxivat de l'original el 2012-04-02 [Consulta: 4 febrer 2014].