VASUDEV, V. N. Economic Evaluation of Rare and Strategic Mineral Resources. Journal of Geological Society of India, [S. l.], v. 61, n. 6, p. 751–752, 2003. Disponível em: https://geosocindia.com/index.php/jgsi/article/view/83420. Acesso em: 20 sep. 2024.