RT Journal Article SR Electronic T1 Core Securities JF The Journal of Portfolio Management FD Institutional Investor Journals SP 20 OP 24 DO 10.3905/jpm.1978.408637 VO 4 IS 3 A1 Arun P. Sanghvi A1 Gordon H.. Dash, Jr YR 1978 UL https://pm-research.com/content/4/3/20.abstract AB