| Affiliation: | 1. Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland;3. Department of Theoretical Physics and Astrophysics, P.J. ?afárik University, Park Angelinum 9, 040 01 Ko?ice, Slovak Republic;4. Department of Physics and Applied Physics, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland;5. Department of Physics, University of Pretoria, Pretoria 0002, South Africa;1. Gdansk University of Technology, Gdansk, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland;3. University of Athens, Athens,Greece |
