1. Adams, F.D. (1929). “The geology of Ceylon”. Canadian Journal of Research 11: 425–511.
2. Arboleda, R.A. and Martinez, M.L. (1996). 1992 lahars in the Pasig-Potrero River system. In: Newhall, C.G., Punongbayan, R.S. (Eds.) Fire and mud: eruptions and lahars of Mount Pinatubo. Philippine Institute of Volcanology and Seismology, Quezon City and University of Washington Press, Seattle, 1126 pp.
3. Bednarik, M. (2007). Landslide hazard risk evaluation in land use practice. PhD thesis, Bratislava, p. 130.
4. Bernknopf, R.L., Campbell, R.H., Brookshire, D.S., and Shapiro, C.D. (1988). A probabilistic approach to landslide hazard mapping in Cincinnati, Ohio, with applications for economic evaluation. Bulletin of the Association of Engineering Geologists, 25(1): 39–56.
5. Brabb, E.E. and Pampeyan, E.H. (1972). “Preliminary map of landslide deposits in San Mateo County, California.” U.S. Geological Survey Miscellaneous Field Studies Map MF-344, scale 1:62,500.