1. Animal aggregations: a study in general sociology;Allee,1931
2. Population systems: a general introduction;Berryman,1981
3. The theory and classification of outbreaks;Berryman,1987
4. The conceptual foundations of ecological dynamics;Berryman;Bulletin of the Ecological Society of America,1989
5. Stabilization or regulation: what it all means!;Berryman;Oecologia,1991