1. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, Gdańsk80-233, Poland
2. School of Chemistry, University of Southampton, Highfield, SouthamptonSO17 1BJ, U.K.
3. TASK Computer Centre, Gdansk University of Technology, Narutowicza 11/12, Gdańsk80-233, Poland