1. Contemporaneous formation of adjacent porphyry and epithermal Cu-Au deposits over 300 ka in northern Luzon, Philippines;Arribas;Geology,1995
2. Balboa, P. T. (1989) Detailed geologic study of the Far Southeast hydrothermal breccia pipes, Lepanto, Benguet, Philippines. Proc. GEOCON 89, vol. II, Geol. Soc. Philippines.
3. Geology and ore genesis of the porphyry copper deposits in Baguio district, Luzon Island, Philippines;Balce;Jour. Geol. Soc. Philippines,1979
4. Solid solutions in system Cu-Fe-S Part I;Barton;The Cu-S and CuFe-S join. Econ. Geol.,1973
5. Geology of the Sto. Niño copper prospect area;Bryner;Jour. Geol. Soc. Philippines,1970