Source: Carlin, B. P., A. E. Gelfand, and A. F. Smith. 1992. Heirarchical Bayesian analysis of changepoint problems. Journal of the Royal Statistical Society, Series C 41:389-405.
Updated data: Jarrett, R. G. 1979. A note on the intervals between coal-mining disasters. Biometrika 66:191-193.
Original source: Maguire, B. A., E. S. Pearson, and A. H. A. Wynn. 1952. The time intervals between industrial accidents. Biometrika 38, 168-180.