1. Agnese, T., Vreis, B., and Stanolini, B. (1959). Incidence of lung cancer in relation to occupation in Genoa. Ind. Hygiene Mod. 52: 149–160.
2. Ansell, G., and Beeson, M. (1968). A rapid and sensitive procedure for the combined assay of norepinephrine, dopamine and serotonin in a single brain sample. Analyt. Biochem. 23:196–206.
3. Arnold, M., and Sasse, D. (1961). Quantitative and histochemical analysis of Cu, Zn and Fe in spontaneous and induced primary tumors of rats. Cancer Res. 21: 761–766.
4. Billiwicz, W.Z., Kemsley, W.F., and Thomson, A.M. (1962). Indices of adiposity. Brit. J. Prey. Soc. Med. 16: 183–188.
5. Brady, F.O., Monaco, M.E., and Forman, H.J. (1972). On the role of copper in activation of and catalysis by tryptophan 2, 3 dioxygenase. J. Biol. Chem. 247: 7915–7922.