1. The penetration of rainfall through hardwood and softwood forest canopy;Beall;Ecology,1934
2. Interception losses in grassy vegetation;Burgy;Trans. Am. Geophys. Union,1958
3. A reappraisal of precipitation interception by plants and attendant water loss;Goodell;J. Soil Water Conserv.,1963
4. Helvey , J. D. Rainfall interception by hardwood forest litter in the southern Appalachians, U. S. Forest Serv. Southeast. Forest Expt. Sta. Res. Paper 8 1964
5. Canopy and litter interception of rainfall by hardwoods of eastern United States;Helvey;Water Resources Res.,1965