1. The Theory of Branching Processes;Harris,1963
2. A branching process allowing immigration;Heathcote;J. Roy. Statist. Soc.,1965
3. Corrections and comments on the paper “A branching process allowing immigration”;Heathcote;J. Roy. Statist. Soc.,1966
4. Age-dependent branching processes allowing immigration;Jagers;Teor. Veroiat Primenen,1968
5. Corrections;Jagers;Teor. Veroiat Primenen,1968