1. Norske Skog Saugbrugs, NO-1756 Halden, Norway, Norwegian University of Science and Technology, Department of Chemical Engineering, NO-7491 Trondheim , Norway
2. Norwegian University of Science and Technology, Department of Chemical Engineering, NO-7491 Trondheim , Norway
3. Norske Skog Saugbrugs, NO-1756 Halden , Norway