1. Plot and small watershed runoff: its relation to larger areas;Amerman;Trans. Amer. Soc. Agr. Engrs.,1967
2. What is watershed runoff?;Betson;J. Geophys. Res.,1964
3. Detection of saturated interflow in soils with piezometers;Betson;Soil Sci. Soc. Amer. Proc.,1968
4. Hewlett , J. D. A. R. Hibbert Factors affecting the response of small watersheds to precipitation in humid areas 1965 International Symposium on Forest Hydrology 275 290 Pergamon, New York 1967
5. The role of infiltration in the hydrologic cycle;Horton;Trans. Amer. Geophys. Union,1933