1. Design aid for grass-lined channels;Akan;J. Hydraul. Eng.,2001
2. Guide for selecting Manning's roughness coefficient for natural channels and floodplains;Arcement,1989
3. Friction factors in open channels, progress report of the task force in open channels of the committee on hydromechanics;J. Hydraul. Division,1963
4. Roughness characteristics of natural channels;Barnes,1967
5. Evaluation of design practices for riprap protection of channels near highway structures;Blodgett,1985