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- [2] THE CONSTITUTION OF USNIC ACID .2. YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN, 1952, 72 (06): : 775 - 780
- [3] SOME OBSERVATIONS ON THE CONSTITUTION OF USNIC ACID JOURNAL OF THE CHEMICAL SOCIETY, 1953, (FEB): : 603 - 609
- [10] USNIC ACID .9. A REVISED STRUCTURE FOR USNOLIC ACID AND THE RESOLUTION OF (+/-)-USNIC ACID JOURNAL OF THE CHEMICAL SOCIETY, 1953, (APR): : 1250 - 1261