Hurst, J.H.; Guchhait, R.B.; Billingsley, M.L.; Stolk, J.M.; Lovenberg, W.
Phenylethanolamine N-methyltransferase: notes on its purification from bovine adrenal medulla and separation from protein carboxymethyltransferase (1983), Biochem. Biophys. Res. Commun., 112, 1061-1068.