1. Branching Processes;Athreya,2000
2. On the supercritical Bellman-Harris processes with finite mean;Athreya;Sankhya,2003
3. Regular Variation;Bingham,1987
4. The simple branching process: a note on convergence when the mean is infinite;Davies;J. Appl. Probab.,1978
5. An Introduction to Probability Theory and its Applications, Vol. II;Feller,1966