1. University of Florida Informatics Institute 432 Newell Dr, CISE Bldg E251 Gainesville FL 32611 USA
2. Currently at: AT&T Labs Research
3. Department of Chemistry and BiochemistryUniversity of Minnesota 246 Chemistry Building, 1039 University Drive Duluth MN 55812 USA
4. Department of ChemistryBabes-Bolyai University Strada Arany János 11 Cluj-Napoca 400028 Romania
5. Natural Resources Research InstituteUniversity of Minnesota 5013 Miller Trunk Highway Duluth MN 55811 USA.