RT Journal Article SR Electronic T1 The CAPM and the investment horizon JF The Journal of Portfolio Management FD Institutional Investor Journals SP 66 OP 68 DO 10.3905/jpm.1982.408897 VO 9 IS 1 A1 Gabriel A. Hawawini A1 Ashok Vora YR 1982 UL https://pm-research.com/content/9/1/66.abstract AB