Clarkson TB, Cline JM, Williams JK, Anthony MS. Gonadal hormone substitutes: effects on the cardiovascular system. Osteoporos Int. 1997;7(Suppl 1):543-51.
Reed (Earnshaw) SR, Reed JH, Stuhldreher TJ. Transaction costs, taxes, and portfolio revision. J Contemp Bus Issue. 1997;5:40-8.