1. Anton AH, Sayre DF (1964) The distribution of dopamine and dopa in various animals and method for their determination in diverse biological material. J Pharmacol Exp Ther 145: 326
2. Axelrod J (1962) Purification and properties of phenylethanolamin-N-methyltransferase. J Biol Chem 237: 1657
3. Bertler A, Carlsson A, Rosengren E (1959) Fluorometric method for differential estimation of 3-O-methylated derivatives of adrenaline and noradrenaline ( Metanephrine and Normetanephrine ). Clin Chim Acta 4: 456
4. Blaschko H (1973) Catecholamine biosynthesis. Br Med Cull 29: 105
5. Braunwald E (1974) The autonomic nervous system in heart failure. In: Braunwald E (ed) The myocardium: failure and infarction. HP Publishing, New York, pp 59–69