1. Ahtiainen, J. (2002). Microbiological tests and mesurements in the assessment of harmful substances and pollution. Monographs of the Boreal Environment Research No 22. Finland: Finnish Environment Institute.
2. Alexander, M. (1997). Introduction to soil microbiology (2nd ed.). New York: Wiley.
3. Altman, D. J., Hazen, T. C., Tien, A., Lombard, K. H., & Worsztynowicz, A. (1997). Czechowice oil refinery bioremediation demonstration test plan, WSRC-MS-97-21H. Aiken, S.C. DOE-NITS: Westinghouse Savannah River Company.
4. Braud-Grasset, F., Baud-Grasset, S., & Safferman, S. I. (1993). Evaluation of the bioremediation of a contaminated soil with phytotoxicity tests. Chemosphere, 26, 1365–1374. doi: 10.1016/0045-6535(93)90187-A .
5. Brohon, B., Delolme, C., & Gourdon, R. (2001). Complementarity of bioassays and microbial activity measurements for the evaluation of hydrocarbon-contaminated soils quality. Soil Biology & Biochemistry, 33, 883–891. doi: 10.1016/S0038-0717(00)00234-0 .