RT Journal Article SR Electronic T1 Investing in junk bonds JF The Journal of Portfolio Management FD Institutional Investor Journals SP 60 OP 62 DO 10.3905/jpm.1990.409247 VO 16 IS 2 A1 Harold. Bierman, Jr YR 1990 UL https://pm-research.com/content/16/2/60.abstract AB