1. El complejo de Imataca en los alredores de Cerro Bolivar, Estado Bolivar, Venezuela;Ascanio,1975
2. Notes on the geology of Guyana along the frontier with Venezuela;Barron,1975
3. Paleotectonica del escudo Guyana;Bellizzia,1974
4. A synopsis of the geology of southern Guyana;Berrangé,1973
5. The Apoteri volcanic formation — tholeiitic flows in the North Savannas graben of Guyana and Brazil;Berrangé;Geol. Rundsch.,1975