← Search Journal of Finance Vol. 43 No. 4 1988 A Multiperiod Asset-Pricing Model with Unobservable Market Portfolio: A Note Hossein B. Kazemi University of Massachusetts Amherst DOI10.2307/2328150 Volume43 Issue4 Pages1015 Sources semanticscholar openalex crossref 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 ✓