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2. A simple general method for the assay offree hormones (and drugs): Its application to the measurement of serum free thyroxine levels and the bearing of assay results on the "free thyroxine" concept;Ekins;J Endocrinol,1980
3. New methods of free thyroid hormone assay;Wilkins,1981
4. Free hormones and drugs: their physiological significance and direct measurement by radioimmunoassay;Ekins,1981
5. Euthyroid sick syndrome and free thyroxine assay;Ekins;Lancet,1983