1. Enzyme activities. Methods in applied soil biology and biochemistry, Chapter 7;Alef,1995
2. Permutational Multivariate Analysis of Variance (PERMANOVA);Anderson;Wiley Stats Ref: Statistics Reference Online. John Wiley and Sons Ltd. https://doi. org/,2017
3. ATSDR (Agency for Toxic Substances and Disease Registry)., 2004. U.S. Department of Health and Human Services Public Health Service. Interaction profile for Arsenic, Cadmium, Chromium, and Lead. https://www.atsdr.cdc.gov/interactionprofiles/ip04.html (accessed 7 September 2022).
4. Soil enzyme: The state of the art;Bakshi,2011
5. Assessment of selected heavy metals and enzymes in soil within the range of impact of illegal Dumping Sites;Bartkowiak;Int. J. Environ. Res.,2016