1. Group size as a determinant of dominance-hierarchy stability in the rat;Becker;J. Comp. Physiol. Psychol.,1968
2. Effects of testosterone propionate on territoriality in flocks of ring-doves;Bennet;Trans. Ill. State Acad. Sci.,1942
3. Hierarchy feeding behaviour in the leopard frog (Rana pipiens);Boice;Anim. Behav.,1969
4. Some factors affecting aggressive behaviour in crayfish;Bovberg;Physiol. Zool.,1956
5. The Evolution of Behaviour;Brown,1975