N. Mechow, I. Cosgarea, E. Ogwang, I. Franke, H. P. Gollnick, and S. R. Quist, “Gigantic Erythematous Plaques with Violaceous Oedematous Borders: A Quiz”, Acta Derm Venereol, vol. 93, no. 6, pp. 763–765, Mar. 2013.