1. Department of Energy and Petroleum Engineering University of Stavanger 4036 Stavanger Norway
2. Beyonder AS Kanalsletta 2 4033 Stavanger Norway
3. Department of Chemistry Bioscience and Environmental Technology University of Stavanger 4036 Stavanger Norway
4. Department of Mechanical and Structural Engineering and Material Science University of Stavanger 4036 Stavanger Norway
5. Department of Physical and Macromolecular Chemistry Faculty of Science Charles University Hlavova 8 12843 Prague 2 Czech Republic
6. Center for Analysis and Testing Nanjing Normal University 210023 Nanjing P. R. China