L. C. . Lai, S. A. . Dunkley, M. J. . Reed, M. W. . Ghlichik, and V. H. T. . James, “Unbound, Biologically Active Oestradiol, Sex Hormone-Binding Globulin, Epidermal Growth Factor and Electrolytes in Breast Cyst Fluid”, AO, vol. 30, no. 1, pp. 71–72, Jan. 1991.