1. Aggression: some definition and some physiology;Davies;Polit. Life Sci.,1967
2. Frustration and Aggression;Dollard,1939
3. Why War?;Einstein,1933
4. The brain in relation to empathy and medical education;MacLean;J. Nerv. Ment. Dis.,1972
5. A proposed mechanism of emotion;Papez;Arch. Neurol. Psychiatr.,1937