Porphyry copper commodity report, Sect. 3, in Paley, H.N., ed., The joint NASA/Geosat test case project, Final report, Part 2, V. 1

Abrams, M.J., and Brown, David, 1984, Porphyry copper commodity report, Sect. 3, in Paley, H.N., ed., The joint NASA/Geosat test case project, Final report, Part 2, V. 1: American Association of Petroleum Geologists, p. 3.1-3.20.