1. Bjekknes, J., , A method of approximate computation of orographical precipitation, U. S. Engineer Office, San Francisco, 1940,
2. Orographic; rainfall and its place in the Hydrology of the globe;Bonacina;Q. J. R. Met oc.,1945
3. An approach to quantitative forecasting of precipitation;Showalter;Bull. Amer. Met Soc.,1944
4. Report on maximum possible precipitation over the Sacramento Basin, California;U. S. Weather Bureau, Hydrometeorological Section,1943
5. Report on maximum possible precipitation, Los Angeles Area, California;U. S. Weather Bureau, Hydrometeorological Section,1940