1. TU KaiserslauternInstitute of Particle Process Engineering Gottlieb-Daimler-Strasse 44 67663 Kaiserslautern Germany
2. TU Dortmund UniversityLaboratory of Solids Process Engineering Emil-Figge-Strasse 68 44227 Dortmund Germany
3. Hamburg University of TechnologyInstitute of Solids Process Engineering and Particle Technology Denickestrasse 15 (K) 21073 Hamburg Germany