1. American Public Health Association, 1998. Standard Methods for the Examination of Water and Wastewater. American Public Health Association
2. Evaluation of sucrose as an alternative to sodium-chloride in the Microtox assay––comparison to fish and Cladoceran tests with freshwater effluents;Ankley;Environmental Toxicology and Chemistry,1990
3. Geochemistry, Groundwater and Pollution;Appelo,1996
4. Aztec Ltd., 1998. Manual for use of Eclox; a chemi-luminescence bioassay. Aztec Ltd., UK
5. Azur Environmental Ltd., 1998. Comparison test protocol for Microtox 500 analyser. Azur Environmental Ltd., Wokingham, UK