Bjerring, P, et al. “The Flashlamp-Pumped Dye Laser and Dermabrasion in Psoriasis--Further Studies on the Reversed Köbner Phenomenon”. Acta Dermato-Venereologica, vol. 77, no. 1, Jan. 1997, pp. 59-61, doi:10.2340/0001555577059061.