RT Journal Article SR Electronic T1 Credit Risk Analysis for Developing Country Bond Portfolios JF The Journal of Portfolio Management FD Institutional Investor Journals SP 99 OP 103 DO 10.3905/jpm.23.2.99 VO 23 IS 2 A1 Steven I Dym YR 1997 UL https://pm-research.com/content/23/2/99.abstract AB