6.10.2004 EKOPROFIT (ÍKOPROFIT«)
3.5.2004 Construction of sewage system and wastewater treatment plant Slovenska Bistrica
27.3.2003 Project Ecoprofit: Certification of the company IEI d.o.o.
19.11.2002 VIIth International Symposium Waste Management Zagreb 2002
5.5.2002 Landfill for municipal waste (Hooge Maey) ad landfill for hazardous waste in Antwerp, Belgium