RT Journal Article SR Electronic T1 Gradient Maximization JF The Journal of Portfolio Management FD Institutional Investor Journals SP 89 OP 98 DO 10.3905/jpm.1995.89 VO 21 IS 4 A1 John S. Brush A1 Varilyn K. Schock YR 1995 UL https://pm-research.com/content/21/4/89.abstract AB