RT Journal Article SR Electronic T1 The Dirty Crowd of Little Men JF The Journal of Portfolio Management FD Institutional Investor Journals SP 4 OP 4 DO 10.3905/jpm.1975.408522 VO 1 IS 3 A1 Peter L. Bernstein YR 1975 UL https://pm-research.com/content/1/3/4.abstract AB