RT Journal Article SR Electronic T1 High–yield default rates JF The Journal of Portfolio Management FD Institutional Investor Journals SP 54 OP 59 DO 10.3905/jpm.1990.409257 VO 16 IS 2 A1 Laurie S. Goodman YR 1990 UL https://pm-research.com/content/16/2/54.abstract AB