1. Laboratory of Theoretical and Computational Chemistry
2. Institute of Theoretical Chemistry
3. Jilin University
4. Changchun
5. People's Republic of China
6. Beijing Computational Science Research Center
7. Beijing
8. P. R. China
9. Department of Physics and Astronomy
10. University of California
11. Department of Chemistry & Biochemistry
12. California State University
13. Northridge
14. USA