191. Garfield, Eugene. "One-Letter Notation for Calculating Molecular Formulas and Searching Long-Chain Peptides in the Index Chemicus Registry System", Journal of Chemical Documentation, 10 (3) p. 212-215, 1970, 1970

191. Garfield, Eugene. "One-Letter Notation for Calculating Molecular Formulas and Searching Long-Chain Peptides in the Index Chemicus Registry System", Journal of Chemical Documentation, 10 (3) p. 212-215, 1970, 1970, Box: 92, Folder: 32. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20960 Accessed October 18, 2024.