1. Standard Methods for the Examination of Water and Wastewater,1985
2. A physiological method for the quantitative measurement of microbial biomass in soils;Anderson;Soil Biol. Biochem.,1978
3. A simple effective procedure for the determination of adenosine triphosphate in soil;Bai;Chemosphere,1988
4. Leaching models and EU registration. The final report of the work group of the Regulatory Modelling Work Group of FOCUS;Boesten,1995
5. Dansk Standard, 1983. Bestemmelse af coliforme bakterier of termotolerante coliforme bakterier. Fortyndingsmetoden (MPN-metoden). DS 2255, Vandundersøgelse.