RT Journal Article SR Electronic T1 How to build a normal portfolio in three easy steps JF The Journal of Portfolio Management FD Institutional Investor Journals SP 21 OP 23 DO 10.3905/jpm.1987.409115 VO 13 IS 4 A1 Mark Kritzman YR 1987 UL https://pm-research.com/content/13/4/21.abstract AB