1. Institute of Paper, Pulp and Fiber Technology, Graz University of Technology, Inffeldgasse 23, 8010 Graz, Austria
2. Lehrstuhl für Röntgenmikroskopie, Universität Würzburg, Josef-Martin-Weg 63, 97074 Würzburg, Germany
3. Institute of Electron Microscopy and Nanoanalysis, Graz University of Technology, Steyrergasse 17, 8010 Graz, Austria
4. Fraunhofer IIS, Josef-Martin-Weg 63, 97074 Würzburg, Germany