1. Chow, V. T. (1959) Open-channel hydraulics. McGraw-Hill, New York
2. Construction Industry Research and Information Association (CIRIA) (1987) Design of reinforced grass waterways. Report 116, London
3. Kirby, J. T., Durrans, S. R., Pitt, R. and Johnson P. D. (2005) Hydraulic Resistance in Grass Swales Designed for Small Flow Conveyance. Journal of Hydraulic Engineering, Vol. 131, No. 1, pp. 65–68
4. U.S. Department of Agriculture (USDA) (1954) Handbook of channel design for soil and water conservation. Technical Paper TP-61, Washington, D.C.