1. Greeson , Phillip E. Lake Eutrophication-A Natural Process
2. Metcalf & Eddy, Inc. 1969 Occoquan Reservoir Study 1970
3. Euthrophication: Causes, Consequences, Correctives Proc. Symp., National Academy of Sciences 1969
4. Artifical Stratification in Reservoirs. Committee Report;Jour. AWWA,1971
5. Taste and Odor Problems in Fairfax County;Gay;Willing Water,1970