RT Journal Article SR Electronic T1 The five Ws and an H JF The Journal of Portfolio Management FD Institutional Investor Journals SP 20 OP 22 DO 10.3905/jpm.1991.409390 VO 18 IS 1 A1 Mark Edwards A1 Wayne H. Wagner YR 1991 UL https://pm-research.com/content/18/1/20.abstract AB