RT Journal Article SR Electronic T1 Evaluating Investment Skill with a VAM Graph JF The Journal of Investing FD Institutional Investor Journals SP 64 OP 71 DO 10.3905/joi.5.2.64 VO 5 IS 2 A1 Jeffery V. Bailey YR 1996 UL https://pm-research.com/content/5/2/64.abstract AB