1. b Helsinki University of Technology, Department of Forest Products Technology , Vuorimiehentie 1, FIN-02150, Espoo, Finland
2. a Institute of Chemistry, Laboratory of Catalysis , A. Goštauto 9, LT-2600, Vilnius, Lithuania
3. c Vilnius University, Faculty of Chemistry , Naugarduko 24, LT-2006, Vilnius, Lithuania
4. d Vilnius Pedagogical University , Studentų 39, LT-2034, Vilnius, Lithuania