RT Journal Article SR Electronic T1 Liquidity and execution costs in equity markets JF The Journal of Portfolio Management FD Institutional Investor Journals SP 10 OP 16 DO 10.3905/jpm.1988.409160 VO 14 IS 3 A1 Joel Hasbrouck A1 Robert A. Schwartz YR 1988 UL https://pm-research.com/content/14/3/10.abstract AB