1. Northwestern University, Department of Chemistry, 2145 Sheridan Road, Evanston, Illinois 60208, United States
2. Orlik Software, ul. Przestrzenna 35/1, 50-534 Wroclaw, Poland
3. Wroclaw University of Science and Technology, Department of Theoretical Physics, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland