Affiliation: | a Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroc?aw, Poland b Department of Ecology and Protection of Environment, Volyn State University, Voli Avenue 13, 43009 Lutsk, Ukraine c Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland |