RT Journal Article SR Electronic T1 Structural Changes in Trading Stocks JF The Journal of Portfolio Management FD Institutional Investor Journals SP 19 OP 27 DO 10.3905/jpm.1993.409467 VO 20 IS 1 A1 Bartley J. Madden YR 1993 UL https://pm-research.com/content/20/1/19.abstract AB