Identification of biologically active triterpenes and sterols present in hexane extracts from Miconia species using high-resolution gas chromatography - Crevelin, Eduardo J.; Turatti, Isabel C. C.; Crotti, Antônio Eduardo Miller; Veneziani, Rodrigo C. S.; Lopes, João Luís Callegari; Lopes, Norberto Peporine; Cunha, Wilson Roberto (Biomedical Chromatography, 2006)