RT Journal Article SR Electronic T1 How Good is Investment Advice for Individuals? JF The Journal of Portfolio Management FD Institutional Investor Journals SP 76 OP 77 DO 10.3905/jpm.1979.76 VO 5 IS 2 A1 Samuel Eisenstadt YR 1979 UL https://pm-research.com/content/5/2/76.abstract AB