Appendix A: Design Procedure for Riprap Armor
Stevens, M.A., Simons, D.B., and Lewis, G.L. (1976) Safety factor for riprap protection,
Journal of the Hydraulics Division, 
ASCE, v. 
102, no. HY5, 
pp. 637-655, May. 
U.S. Department of Transportation, Federal Highway Administration (1989). Design of
riprap revetment, Hydraulic Engineering Circular No. 11.
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