D. Karamanev and L. Nikolov, Influence of some physicochemical parameters on bacterial activity of biofilm: Ferrous iron oxidation byThiobacillus ferrooxidans, Biotechnology and Bioengineering, vol.9, issue.4, pp.295-299, 1988.
DOI : 10.1002/bit.260310403

L. Nikolov, Automatics and Informatics " '08, John Atanassov celebration days, PROCEEDINGS of the International Conference, 2008.

I. Simenonov, E. Choru??va, V. Mamatarkova, and L. Nikolov, Biogas Production from Organic Wastes in Suspeded Cell Cultures and in Biofilms, Biotechnology & Biotechnological Equipment, vol.95, issue.sup1, pp.558-566, 2010.
DOI : 10.1080/13102818.2010.10817897