Ekelund, M. et al. 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 (Sep. 1985), 437–439. DOI:https://doi.org/10.2340/0001555565437439.