The Re-Os isotopic system: geochemistry and methodology at the geochronological research center (CPGeo) of the University of São Paulo, Brazil - Correia, Ciro Teixeira; Kirk, Jason Donald; Frick, Louise Ruth; Petronilho, Liliane Aparecida; Tassinari, Colombo Celso Gaeta; Sato, Kei (Geologia USP. Série Científica, 2007)