PT - JOURNAL ARTICLE AU - George W. Schroeder TI - A Simple System for Managing and Monitoring AID - 10.3905/jpm.1976.408572 DP - 1976 Jul 31 TA - The Journal of Portfolio Management PG - 52--56 VI - 2 IP - 4 4099 - https://pm-research.com/content/2/4/52.short 4100 - https://pm-research.com/content/2/4/52.full