Herraiz Lalana, Enrique. “Permanent Magnets and Its Production by Powder Metallurgy”. Revista de Metalurgia 54, no. 2 (June 30, 2018): e121. Accessed May 2, 2025. https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/1435.