1. Agbeti, M. and M. Dickman. (1989). Use of lake fossil diatom assemblages to determine historical changes in trophic status. Can. J. Fish Aquat Sci., 46, 1013–1021.
2. Angermeier, P. L. and J. R. Karr. (1986). Relationships between woody debris and fish habitat in a small warmwater stream. Trans. Am. Fish Soc., 113, 716–726.
3. Boyle, T. P., G. M. Smillie, J. C. Anderson and D. R. Beeson. (1990). A sensitivity analysis of nine diversity and seven similarity indices. Res. J. Water Pollut. Contr. Fed., 62, 749–762.
4. Brezonik, P. L. (1984). Trophic state indices: rationale for multivariate approaches. In Lake and Reservoir Management, 441–445. EPA 440/5-84/001. U.S. Environmental Protection Agency, Washington, DC.
5. Brooks, R. P., D. E. Arnold, E. D. Bellis, C. S. Kenner and M. J. Croonquist. (1991). A methodology for biological monitoring of cumulative impacts on wetland, stream and riparian components of watersheds. In Wetlands and River Corridor Management, ed. J. A. Kusler and S. Daly. Berne, NY, Association of Wetland Managers, Inc.