PT - JOURNAL ARTICLE AU - Jess B. Yawitz AU - George H. Hempel AU - William J. Marshall TI - Is Average Maturity a Proxy for Risk? AID - 10.3905/jpm.1976.60 DP - 1976 Apr 30 TA - The Journal of Portfolio Management PG - 60--63 VI - 2 IP - 3 4099 - https://pm-research.com/content/2/3/60.short 4100 - https://pm-research.com/content/2/3/60.full