1. Assay of the anaerobic ammonification;Alef,1995
2. Arginine ammonification;Alef,1995
3. Estimation of the nitrification in soil;Alef,1995
4. ASTM, 2001. American Society for Testing and Materials: Standard Guide for Conducting Laboratory Soil Toxicity with the Nematode Caenorhabditis elegans. ASTM E 2172-01, USA.
5. Toxicological Profile for Toxaphene,1998