Schumann, Tamara; Peitsch, Wiebke K.; Géraud, Cyrill; Goerdt, Sergij; Leverkus, Martin (October 2011). "Ultraviolet light tattoo complicated by granulomatous inflammation". Journal of the American Academy of Dermatology. 65 (4): e124–e126. doi:10.1016/j.jaad.2011.03.028. PMID21920233.
Schumann, Tamara; Peitsch, Wiebke K.; Géraud, Cyrill; Goerdt, Sergij; Leverkus, Martin (October 2011). "Ultraviolet light tattoo complicated by granulomatous inflammation". Journal of the American Academy of Dermatology. 65 (4): e124–e126. doi:10.1016/j.jaad.2011.03.028. PMID21920233.