由 Prentice, R. L.[url=][/url] 通过 Biometrika[url=][/url]
The Clayton–Oakes bivariate failure time model is extended to dimensions $m > 2$ in a manner that allows unspecified marginal survivor functions for all dimensions less than $m$. Special cases that allow unspecified marginal survivor functions of dimension $q$ or less with $q , while making some provisions for dependencies of dimension greater than $q$, are also described.