Calado, B. de O., F. G. Costa, I. P. Gomes, and J. B. Rodrigues. “Evidence for Ca. 2046 Ma High-Grade Metamorphism in Paleoproterozoic Metasedimentary Rocks of the Northern Borborema Province, NE Brazil: Constraints from U-Pb (LA-ICP-MS) Zircon Ages”. Journal of the Geological Survey of Brazil, Vol. 2, no. 3, Oct. 2019, pp. 137-50, doi:10.29396/jgsb.2019.v2.n3.1.