RT Journal Article SR Electronic T1 A Winning Strategy for an Efficient Market JF The Journal of Portfolio Management FD Institutional Investor Journals SP 20 OP 25 DO 10.3905/jpm.1978.408647 VO 4 IS 4 A1 Burton G. Malkiel A1 Paul B. Firstenberg YR 1978 UL https://pm-research.com/content/4/4/20.abstract AB