RT Journal Article SR Electronic T1 Long–Run Trends in Equity Turnover JF The Journal of Portfolio Management FD Institutional Investor Journals SP 66 OP 73 DO 10.3905/jpm.1990.409300 VO 17 IS 1 A1 Seymour Smidt YR 1990 UL https://pm-research.com/content/17/1/66.abstract AB