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Renata da Silva Schmitt; Rudolph Allard Johannes Trouw; Silvia Regina Medeiros; Elton Luiz Dantas. (2008). Age and geotectonic setting of Late Neoproterozoic juvenile mafic gneisses and associated paragneisses from the Ribeira belt (SE Brazil) based on geochemistry and Sm–Nd data — Implications on Gondwana assembly. , 13(4), 502–515. doi:10.1016/j.gr.2007.05.015 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research