V. Vierow, C. Forster, R. Vogelgsang, A. Dörfler, and H. O. Handwerker, “Cerebral Networks Linked to Itch-related Sensations Induced by Histamine and Capsaicin”, Acta Derm Venereol, vol. 95, no. 6, pp. 645–652, Feb. 2015.