RT Journal Article SR Electronic T1 Rejoinder JF The Journal of Portfolio Management FD Institutional Investor Journals SP 93 DO 10.3905/jpm.1981.408790 VO 7 IS 2 A1 Harvey M. Salkin A1 Peter H. Pitchken YR 1981 UL https://pm-research.com/content/7/2/93.abstract AB