PT - JOURNAL ARTICLE AU - Jean Helwege AU - Paul Kleiman TI - Understanding Aggregate Default Rates of High-Yield Bonds AID - 10.3905/jfi.1997.408202 DP - 1997 Jun 30 TA - The Journal of Fixed Income PG - 55--61 VI - 7 IP - 1 4099 - https://pm-research.com/content/7/1/55.short 4100 - https://pm-research.com/content/7/1/55.full