1. Regenerative stochastic processes
2. On semi-Markov processes on arbitrary spaces
3. On regenerative processes with several types of regeneration states;Rykov;Cybernetics,1971
4. Probability Theory and Mathematical Statistics;Klimov,1983
5. Theoreme de renouvelltment et classification pour les chaines semi-Markoviennes;Jacod;Ann. Inst. Henri Poincare Sect. B,1971