1. K. Gumiński Department of Theoretical Chemistry
2. Faculty of Chemistry
3. Jagiellonian University
4. 30-387 Kraków
5. Poland
6. Institut de Quìmica Computacional i Catàlisi
7. Universitat de Girona
8. 17003 Girona
9. Spain
10. Department of Chemistry
11. University of Warsaw
12. 02-093 Warszawa
13. Warsaw University of Technology
14. 00-664 Warszawa
15. Department of Plant Cytology and Embryology
16. Institute of Botany
17. Theoretical and Structural Chemistry Group
18. University of Lodz
19. 90-236 Łódź