RT Journal Article SR Electronic T1 High return and low risk in called preferreds JF The Journal of Portfolio Management FD Institutional Investor Journals SP 81 OP 82 DO 10.3905/jpm.1987.409106 VO 13 IS 3 A1 Norriss S. Hetherington YR 1987 UL https://pm-research.com/content/13/3/81.abstract AB