RT Journal Article SR Electronic T1 A Simple System for Managing and Monitoring JF The Journal of Portfolio Management FD Institutional Investor Journals SP 52 OP 56 DO 10.3905/jpm.1976.408572 VO 2 IS 4 A1 George W. Schroeder YR 1976 UL https://pm-research.com/content/2/4/52.abstract AB