1. L etterman , R.D. P ero , R.W. Polyelectrolyte Coagulants in Water Treatment-An Assessment of Research Needs Rept. to AWWARF, Denver, Colo. 1988
2. Survey of Polyelectrolyte Use in the United States;AWWA Coagulation and Filtration Committee;Jour. AWWA,1982
3. Design and Operation Guidelines for Optimization of the High-Rate Filtration Process: Plant Survey Results;Cleasby,1989
4. H anson , H. P erler , A. S axena , J. The Regulatory Framework for the Control and Use of Organic Polyelectrolytes in Drinking Water. AWWA Sunday Seminar Proc. 1983 AWWA Ann. Conf., Las Vegas, Nev.