1. Comparison of saturated hydraulic conductivity and percolation rate;Amoozegar,1997
2. Ballantyne P. L. (1998) A laboratory study of the treatment of wastewater in a sand filter. M. Eng. Sc. thesis to National University of Ireland, 142 pp. +appendices.
3. Evaluation of field percolation tests and an alternative procedure to test soil potential for disposing septic tank effluent;Bouma;Soil Sci. Soc. Amer. Proc.,1971
4. Bouwer H. (1978) Groundwater Hydrology. McGraw-Hill Inc., New York, pp. 56–61.
5. Intake rate;Bouwer,1986