Simandl, George J., Richard O. Burt, David L. Trueman, and Suzanne Paradis. “Economic Geology Models 4. Tantalum and Niobium: Deposits, Resources, Exploration Methods and Market – A Primer for Geoscientists”. Geoscience Canada 45, no. 2 (July 12, 2018): 85–96. Accessed March 28, 2024. https://journals.lib.unb.ca/index.php/GC/article/view/26003.