1. ASTM (1980) Standard practise for conducting acute toxicity tests with fishes, macroinvertebrates and amphibians E-729-90. American Standards for Testing and Materials. Philadelphia, P.A.
2. Baird DJ, Soares AMVM, Girling A, Barber I, Bradley M, Calow P (1989) The long-term maintenance of Daphnia magna Straus for use in ecotoxicity tests: problems and prospects. In: Lokke H, Bro-Rasmussen F (eds) Proceedings of the 1st European conference on ecotoxicology, Copenhagen 1988. Conference Organising Committe, Lyngby (Denmark), pp 144?148
3. Bradley MC, Baird DJ, Calow P (1990) Mechanisms of energy allocation to reproduction in the cladoceran Daphnia magna Straus (in press)
4. Kooijman SALM (1986) Population dynamics on the basis of budgets. In: Metz JAJ, Diekman O (eds) The dynamics of physiologically structured populations. Springer, Berlin Heidelberg New York, pp 266?297
5. McCauley E, Murdoch WW, Nisbet RM, Gurney WSC (1990) The physiological ecology of Daphnia: Development of a model of growth and reproduction. Ecology 71:703?715