Aromatic l-Amino Acid DecarboxylaseWalter Lovenberg, Sidney Udenfriend, Herbert Weissbach|Journal of Biological Chemistry|1962Cited by 853
THE IDENTIFICATION OF 5-HYDROXY-3-INDOLEACETIC ACID IN NORMAL URINE AND A METHOD FOR ITS ASSAYSidney Udenfriend, Herbert Weissbach, Elwood Titus|Journal of Biological Chemistry|1955Cited by 550
THE ESTIMATION OF 5-HYDROXYTRYPTAMINE (SEROTONIN) IN BIOLOGICAL TISSUESSidney Udenfriend, Carroll T. Clark, Herbert Weissbach|Journal of Biological Chemistry|1955Cited by 422
A Rapid Spectrophotometric Assay of Monoamine Oxidase Based on the Rate of Disappearance of KynuramineHerbert Weissbach, Sidney Udenfriend, Thomas E. Smith et al.|Journal of Biological Chemistry|1960Cited by 410
THE DISTRIBUTION OF SEROTONIN, 5‐HYDROXYTRYPTOPHAN DECARBOXYLASE, AND MONOAMINE OXIDASE IN BRAIN*Donald F. Bogdanski, Sidney Udenfriend, Herbert Weissbach|Journal of Neurochemistry|1957Cited by 348