Teixeira, N.A., J.C. Gaspar, A.L.A.M. Oliveira, R.M. Bitencourt, and B. Yeda. “Morphology of the Juina Maars”. International Kimberlite Conference: Extended Abstracts 7, no. 1 (April 17, 1998): 902–904. Accessed April 20, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2925.