Agrup, G, T Andersson, B Falck, K Persson, H Rorsman, AM Rosengren, and E. Rosengren. 1975. “5-S-Cysteinyldopa in the Plasma of Melanoma Patients and the Renal Clearance of This Amino Acid”. Acta Dermato-Venereologica 55 (1):5-6. https://doi.org/10.2340/00015555556.