1. Department
of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, United States
2. Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, via A. Moro
2, I-53100 Siena, Italy
3. Department
of Chemistry, Ångström, the Theoretical Chemistry Programme, POB 518, SE-751 20 Uppsala, Sweden
4. Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
5. Firefly Project, Moscow 117593, Russia
6. Dipartimento
di Chimica, Università di Ferrara, via Borsari 46, I-44121 Ferrara, Italy