1. Alexander M (1985) Enhancing nitrogen fixation by use of pesticides: A review. Adv Agron 38: 267–282.
2. Babich H, Stotzky G (1986) Environmental factors affecting the utility of microbial assays for the toxicity and mutagenicity of chemical pollutants. In: Dutka BJ, Bitton G (eds) Toxicity Testing Using Microorganisms, Vol II. CRC Press, Boca Raton, FL, pp 9–42.
3. Bold HC, Wynne MJ (1978) Introduction to the Algae. Prentice-Hall, Englewood Cliffs, NJ, p 34.
4. Cain JR, Cain RK (1983) The effects of selected herbicides on zygospore germination and growth of Chlamydomonas moewusii ( Chlorophyceae, Volvocales). J Phycol 19: 301–305.
5. Cameron HJ, Julian GR (1984) The effects of four commonly used fungicides on the growth of Cyanobacteria. Plant Soil 78: 409–415.