RT Journal Article SR Electronic T1 Market Timing Works Where it Matters Most… in the Real World JF The Journal of Portfolio Management FD Institutional Investor Journals SP 86 OP 90 DO 10.3905/jpm.1992.409415 VO 18 IS 4 A1 Jerry C Wagner A1 Steve Shellans A1 Richard Paul YR 1992 UL https://pm-research.com/content/18/4/86.abstract AB