RT Journal Article SR Electronic T1 A test of the CAPM via a confidence level approach* JF The Journal of Portfolio Management FD Institutional Investor Journals SP 56 OP 61 DO 10.3905/jpm.1982.408892 VO 9 IS 1 A1 Haim Levy YR 1982 UL https://pm-research.com/content/9/1/56.abstract AB