RT Journal Article SR Electronic T1 Optimum Trading Strategies for Closed-End Funds JF The Journal of Investing FD Institutional Investor Journals SP 54 OP 61 DO 10.3905/joi.6.1.54 VO 6 IS 1 A1 Richard William Sias YR 1997 UL https://pm-research.com/content/6/1/54.abstract AB