RT Journal Article SR Electronic T1 Improving Quantitative Models Through Optimization JF The Journal of Investing FD Institutional Investor Journals SP 24 OP 30 DO 10.3905/joi.3.4.24 VO 3 IS 4 A1 Bernard V Tew A1 Richard Bernstein YR 1994 UL https://pm-research.com/content/3/4/24.abstract AB