PT - JOURNAL ARTICLE AU - James C. Van Horne TI - Call risk in municipal bonds AID - 10.3905/jpm.1987.409089 DP - 1987 Jan 31 TA - The Journal of Portfolio Management PG - 53--57 VI - 13 IP - 2 4099 - https://pm-research.com/content/13/2/53.short 4100 - https://pm-research.com/content/13/2/53.full