RT Journal Article SR Electronic T1 Empirical measurement of exchange rate betas JF The Journal of Portfolio Management FD Institutional Investor Journals SP 43 OP 46 DO 10.3905/jpm.1983.408930 VO 9 IS 4 A1 Jeff Madura YR 1983 UL https://pm-research.com/content/9/4/43.abstract AB