1. Helios Domzˇale d.d.; Central R&D of HELIOS Group, Kolicˇevo 2; SI-1230 Domzˇale Slovenia
2. Centre of Excellence for Polymer Materials and Technologies; Tehnolosˇki park 24 SI-1000 Ljubljana Slovenia
3. Department of Polymer Engineering; The University of Akron; 250 S. Forge St. Akron OH 44325 USA