1. BERL, S, FEDERATION P 2011: 342 (1961).
2. BLOCH, K, The biological conversion of cholesterol to cholic acid, JOURNAL OF BIOLOGICAL CHEMISTRY 149: 511 (1943).
3. BROECKER, W.S., BOMB CARBON-14 IN HUMAN BEINGS, SCIENCE 130: 331 (1959).
4. FERGUSSON, G.J., NUCLEONICS 13: 18 (1955).
5. GAITONDE, M.K., THE METABOLIC ACTIVITY OF THE PROTEINS OF THE BRAIN, PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES 145: 83 (1956).