1. National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, United States
2. Department of Basic Sciences, University of Health Sciences and Pharmacy in St. Louis, St. Louis, Missouri 63110, United States
3. Sherman Fairchild Library, California Institute of Technology, Pasadena, California 91125, United States
4. Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72022, United States
5. Department of Quantitative Methods, IQS Universitat Ramon Llull, Barcelona, 08017, Spain
6. Department of Chemistry, Centre College, Danville, Kentucky 40422, United States
7. Department of Chemistry & Biochemistry, South Dakota State University, Brookings, South Dakota 57007, United States
8. Department of History, Duke University, Durham, North Carolina 27708, United States
9. Department of Chemistry, Otterbein University, Westerville, Ohio 43081, United States
10. Department of Computing & Mathematics, Oral Roberts University, Tulsa, Oklahoma 74171, United States
11. Department of Chemistry, University of California-Davis, Davis, California 95616, United States
12. MIT Libraries, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
13. Physical Sciences Library, Cornell University, Ithaca, New York 14853, United States
14. Department of Chemistry, University of Illinois Springfield, Springfield, Illinois 62703, United States