Probabilistic and statistical models for the occurrence of a recurrent event over time are described. These models have applicability in the reliability, engineering, biomedical and other areas where a series of events occurs for an experimental unit as time progresses. Nonparametric inference methods, in particular, the estimation of a relevant distribution function, are described.
"Nonparametric Methods in Reliability." Statist. Sci. 19 (4) 644 - 651, November 2004. https://doi.org/10.1214/088342304000000521