- Relationship of the Negative Binomial distribution and Poisson-Gamma mixture
- Relationship of two Gamma distributions and the Beta distribution
- Relationship of the Poisson-Gamma mixture to the Multinomial distribution

- Probability models for customer-base analysis [PDF]
- The log-sum-exp trick for numerical stability
*Statistical Intervals: A Guide for Practitioners and Researchers*, Meeker, Hahn and Escobar*Statistical Methods for Reliability Data*, Meeker and Escobar*Statistical Models and Methods for Lifetime Data*, Lawless