1. Bryce, J.G., 1991. Master’s Thesis, Univ. Virginia.
2. CDEC (California Data Exchange Center), 2003. http://cdec.water.ca.gov.
3. Connolly, N.T., 1997. Bachelor’s Thesis, Hampshire College, MA.
4. Intrusive and extrusive growth of the Mount St. Helens dome;Fink;Nature,1990
5. Hill, D.P., Dzurisin, D., Ellsworth, W.L., Endo, E.T., Galloway, D.L., Gerlach, T.M., Johnston, M.S.J., Langbein, J., McGee, K.A., Miller, C.D., Oppenheimer, D., Sorey, M.L., 2002. Response plan for volcano hazards in the Long Valley caldera and Mono Craters region California. U.S. Geol. Surv. Bull. 57.