RT Journal Article SR Electronic T1 The anatomy of a sltock market forecast JF The Journal of Portfolio Management FD Institutional Investor Journals SP 36 OP 44 DO 10.3905/jpm.1989.409237 VO 16 IS 1 A1 William S. Gray YR 1989 UL https://pm-research.com/content/16/1/36.abstract AB