1. Valkarton, Production of Corrugated Board and Packaging d. d.; Tržaška 1 Logatec Slovenia
2. Faculty of Electrical Engineering; University of Ljubljana; Tržaška 25 Ljubljana Slovenia
3. Faculty of Natural Sciences and Engineering, Chair of Information and Graphic Arts Technology; University of Ljubljana; Snežniška 5 Ljubljana Slovenia
4. National Institute of Chemistry; Hajdrihova 19 Ljubljana Slovenia