1. Ahmad R. andAmirtharajah A.(1995) “Detachment of Biological and Nonbiological Particles from Biological Filters During Backwashing ” pp.1057–1085 inProceedings of the AWWA Annual Conference Anaheim CA Volume on Water Research American Water Works Association Denver CO.
2. Effects of Backwashing on Biological Filters;Ahmad R.;J. AWWA,1998
3. Nonlinear Flow in Porous Media;Ahmed N.;J. Hydr. Div. ASCE,1969
4. A New Look at Filter Backwash Hydraulics;Akgiray Ö.;Water Sci. Technol. Water Supply,2001
5. Some Theoretical and Conceptual Views of Filtration;Amirtharajah A.;J. AWWA,1988