← Search Econometrica Vol. 30 No. 4 1962 Stochastic Processes Hans Richter; L Takács DOI10.2307/1909333 Volume30 Issue4 Pages831 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 ✓