Ramírez Sánchez-Maroto, Carlos. “The Necessary Circular Economy Strategy for Mining in Spain”. Revista Andaluza de Administración Pública, no. 112 (April 30, 2022): 275–305. Accessed August 27, 2025. https://ws168.juntadeandalucia.es/revistaselectronicas/raap/article/view/1337.