1. and , Statistical Theory of Reliability and Life Testing: Probability Models, Holt, Rinehart, and Winston, New York, 1975.
2. The IFRA Closure Problem
3. “Some Contributions to the Theory of Restricted Classes of Distributions with Applications to Probability,” Ph.D. dissertation, George Washington University, 1973.
4. The hnbue and hnwue classes of life distributions