1. Manual of evapotranspiration, supplement to Interim Report 10;Mather,1950
2. Design and evaluation of a modified evapotranspirometer, Interim Report 15;Mather,1951
3. Natural evaporation from open water, bare soil, and grass;Penman;Proc. R. Soc., A,1948
4. An approach toward a rational classification of climate;Thornthwaite;Geographical Rev.,1948
5. Potential evapotranspiration;Van Wuk;Netherlands J. Agric. Sci.,1953