1. The geology of Ceylon;Adams;Can. J. Res.,1929
2. The geology of Ceylon;Coates;Ceylon J. Sci.,1935
3. An Introduction to the Geology of Ceylon;Cooray,1967
4. On the origin of the Ratnapura-type gem deposits of Ceylon;Katz;Econ. Geol.,1972
5. Some geological aspects of the Elahera gem field, Sri Lanka;Silva,1976