RT Journal Article SR Electronic T1 Corporate Bond Defaults and Default Rates 1970–1990 JF The Journal of Fixed Income FD Institutional Investor Journals SP 36 OP 47 DO 10.3905/jfi.1991.692345 VO 1 IS 1 A1 Jerome S. Fons A1 Andrew E. Kimball YR 1991 UL https://pm-research.com/content/1/1/36.abstract AB