Badger, R M THE INFRARED ASSOCIATION SPECTRA OF AMIDES IN SOLUTION AND THEIR RELATION TO THE SPECTRA OF POLYPEPTIDES. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Jan 1954 - 12-7 p. digital Publication Type: Journal Article ISSN: 0027-8424 Standard No.: 10.1073/pnas.40.1.12 doi