Naukkarinen, A, N Väätäinen, KJ Syrjänen, and M. Horsmanheimo. 1985. “Immunophenotyping of the Dermal Cell Infiltrate in Lichen Planus Treated With PUVA”. Acta Dermato-Venereologica 65 (5):398-402. https://doi.org/10.2340/0001555565398402.