1. Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense M DK-5230, Denmark
2. University Library, University of Southern Denmark, DK-5230 Odense M, Denmark
3. International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russia
4. Institute of Computational Modelling, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
5. L. V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
6. Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden