Nielsen, G D, A E Rohold, and K E Andersen. “Nickel Contact Sensitivity in the Guinea Pig. An Efficient Open Application Test Method”. Acta Dermato-Venereologica 72, no. 1 (January 1, 1992): 45–48. Accessed July 24, 2026. https://medicaljournalssweden.se/actadv/article/view/16602.