RT Journal Article SR Electronic T1 On the exclusion of real estate from the market portfolio JF The Journal of Portfolio Management FD Institutional Investor Journals SP 78 OP 84 DO 10.3905/jpm.1990.409301 VO 17 IS 1 A1 James R. Webb YR 1990 UL https://pm-research.com/content/17/1/78.abstract AB