Ekelund, MC, R Carstam, C Hansson, H Rorsman, and E. Rosengren. 1985. “Urinary Excretion of 5-S-Cysteinyldopa and 6-Hydroxy-5-Methoxyindole-2-Carboxylic Acid: Differences Between Pigmented and Albino Mice”. Acta Dermato-Venereologica 65 (5):437-39. https://doi.org/10.2340/0001555565437439.