1. Handbook of Mathematical Functions with Formulas, Graphs, and;Abramowitz,1965
2. The Theory of Stochastic Processes;Cox,1965
3. The first passage problem for a continuous Markov process;Darling;Ann. Math. Statist.,1953
4. Models of hazard survival;Lefebvre,1983
5. Stochastic processes: Basic theory and its applications;Prabhu,1965