RT Journal Article SR Electronic T1 Closed-end fund discounts JF The Journal of Portfolio Management FD Institutional Investor Journals SP 46 OP 53 DO 10.3905/jpm.1992.409397 VO 18 IS 2 A1 J. Bradford De Long A1 Andrei Shleifer YR 1992 UL https://pm-research.com/content/18/2/46.abstract AB