Affiliation: | a Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50270 Kaunas, Lithuania b Department of Solid State Electronics, Vilnius University, Sauletekio 9, LT-10222 Vilnius, Lithuania c Department of Polygraphic Machines, Vilnius Gediminas Technical University, Vilnius, LT-10223, Lithuania d Institute of Physics, Savanoriu 231, LT-02300 Vilnius, Lithuania |