1. A.P.H.A., A.W.W.A., W.P.C.F.: Standard Methods for the Examination of Water and Wastewater. 14th ed. Washington: APHA 1975.
2. COMMITTEE ON METHODS FOR ACUTE TOXICITY TESTS WITH AQUATIC ORGANISMS: Methods for Acute Toxicity Tests with Fish, Macroinvertebrates and Amphibians. National Water Quality Laboratory. Duluth MN. EPA-660/3-75-009. 1975.
3. DUNCAN, D.B.: Biometrics11, 1 (1955).
4. KLEPPEL, G.S. and J.J.A. MCLAUGHLIN: Bull. Environm. Contam. Toxicol.24, 696 (1980).
5. MILLER, W.E., J.C. GREENE, T. SHIROYAMA: TheSelenastrum capricornutum Printz Algal Assay Bottle Test. EPA-600/9-78-018. 1978.