RT Journal Article SR Electronic T1 Requiem for Efficient Market Theory JF The Journal of Investing FD Institutional Investor Journals SP 5 OP 9 DO 10.3905/joi.3.2.5 VO 3 IS 2 A1 William W. Jahnke YR 1994 UL https://pm-research.com/content/3/2/5.abstract AB