RT Journal Article SR Electronic T1 Closed-end funds versus market efficiency JF The Journal of Portfolio Management FD Institutional Investor Journals SP 63 OP 65 DO 10.3905/jpm.1986.409078 VO 13 IS 1 A1 Seth Copeland Anderson YR 1986 UL https://pm-research.com/content/13/1/63.abstract AB