Johansson, O. et al. 1987. Phenylethanolamine N-methyltransferase-like immunoreactivity in psoriasis. An immunohistochemical study on catecholamine synthesizing enzymes and neuropeptides of the skin. Acta Dermato-Venereologica. 67, 1 (Jan. 1987), 1–7. DOI:https://doi.org/10.2340/000155556717.