{{Cite journal| doi = 10.7241/ourd.20193.34| issn = 20819390| volume = 10| issue = 3| pages = 323–324| last1 = Brzeziński| first1 = Piotr| last2 = Martini| first2 = Lorenzo| title = Dermatology Eponyms – sign –Lexicon (U)| journal = Our Dermatology Online| accessdate = 2019-07-02| date = 2019-07-02| url = http://www.odermatol.com/issue-in-html/2019-3-34-eponyms/}}