1. Ekins, R. P. (1976). General principles of hormone assay. In Loraine, J. A. and Bell, E. T. (eds.). Hormone Assays and their Clinical Application, 4th Edn., pp. 1–72. ( Edinburgh: Churchill Livingstone )
2. Hunter, W. M., Nars, P. -W. and Rutherford, F. J. (1975). Preparation and behaviour of 1 2 5 Ilabelled radioligands for phenolic and neutral steroids. In Cameron, E. H. D., Hillier, S. G. and Griffiths, K. (eds.). Steroid Immunoassay: Proceedings of the Fifth Tenovus Workshop, pp. 141–52 ( Cardiff: Alpha Omega Publishing )
3. Landon, J., Livanou, T. and Greenwood, F. C. (1967). The preparation and immunological properties of 131I-labelled adrenocorticotrophin. Biochem. J., 105, 1075
4. Alexander, N. M. (1974). Oxidative cleavage of tryptophanyl peptide bonds during chemical, and peroxidase, catalysed iodinations. J. Biol. Chem., 249, 1946–52
5. Schechter, Y., Burstein, Y. and Patchornik, A. (1975). Selective oxidation of methionine residues in proteins. Biochemistry (USA), 14, 4497