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- Asymptotic distribution of the moment of first crossing of a high level by a birth and death process. Berkeley Symposium on Mathematical Statistics and Probability 1972. 1972:- .
- Theory of aging elements. Berkeley Symposium on Mathematical Statistics and Probability 1967. 1967:- .
- On some stochastic problems of reliability theory. Berkeley Symposium on Mathematical Statistics and Probability 1967. 1967:- .