M. Shammas, V. Nirwan, A. Fahmiб Faculty of Technology and Bionics, Rhein-Waal University of Applied Sciences, Kleve, Germany; D. Humelnicu, Faculty of Chemistry, “Al.I Cuza” University of Iasi, 700506, Iasi, Romania, L. Cepoi, Institute of Microbiology and Biotechnology, Chisinau; s. Demcak, Faculty of Civil Engineering, Institute of Environmental Engineering, Technical University of Kosice, Kosice, Slovak Republic

ИБР-2 (РЕГАТА)