1. Faculty of Chemistry and Pharmacy, University of Innsbruck, Innsbruck, Austria
2. Institute of Mineralogy and Petrography, University of Innsbruck, Innsbruck, Austria
3. Competence Centre of Wood Composites and Wood Chemistry K-Plus, Linz, Austria
4. Lenzing AG, Department of Pulp Research, Lenzing, Austria
5. Department of Forest Products Technology, Helsinki University of Technology, Espoo, Finland