Agrella-Filho, M.S. D, I.G. Pacca, W. Teixeira, T.C. Onstott, and P.R. Renne. 1990. “Paleomagnetic Evidence for the Evolution of Meso- to Neo-Proterozoic Glaciogenic Rocks in Central-Eastern Brazil”. Palaeogeography, Palaeoclimatology, Palaeoecology 80: 255-65. doi:10.1016/0031-0182(90)90136-U.