RAJAGOPALA RAO, J.; NAYAK, R.; SURYANARAYANA, A. Feldspar for Potassium, Fertilisers, Catalysts and Cement . Asian Journal of Chemistry, [S. l.], v. 10, n. 4, p. 690–706, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/23707. Acesso em: 23 jul. 2024.