← Search American Economic Review Vol. 70 No. 2 1980 The Efficiency of Foreign Exchange Markets and Measures of Turbulence Jacob A. Frenkel; Michael L. Mussa Volume70 Issue2 Pages374-381 Sources bibtex:phds-export.bib Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓