Hess, R. A., et al. A role for oestrogens in the male reproductive system. Sharpe, R.M. 1997. Swan, S.H., E.P. Elkin, and L. Fenster. A reanalysis of global trend data.
Study finds no decline in sperm counts.
Raloff, J. 1997. Radical prostates . A new breadth to estrogen's bisexuality. A two-decade drop in sperm counts. That feminine touch .