1. Caraway, W. T. (1963). Clin. Chem., 9, 188.
2. The Iron Reagents: Bathophenanthroline, 2,4,6-Tripyridyl-s-triazine, Phenyl-2-pyridyl ketoxine. G;Diehl, H.; Smith, G.F.;Clin. Chem,1960
3. Microanalysis in Medical Biochemistry;King, E.J.; Wootton, I.D.P.,1956
4. Levy, A. L., and Vitacca, P. (1961). Clin. Chem., 7, 241.
5. Nissim, J. A. (1953). Brit. J. Pharmacol., 8, 371.