RT Journal Article SR Electronic T1 The changing character of stock market liquidity JF The Journal of Portfolio Management FD Institutional Investor Journals SP 13 OP 18 DO 10.3905/jpm.1989.409210 VO 15 IS 3 A1 James F. Gammill, Jr. A1 André F. Perold YR 1989 UL https://pm-research.com/content/15/3/13.abstract AB