1. Abrahams, V.C., Hilton, S.M. and Zbrozyna, A.W., Active muscle vasodilatation produced by stimulation of the brain stem: its significance in the defence reaction, J. Physiol. (Lond.), 154 (1960) 491–513.
2. Abrahams, V.C., Hilton, S.M. and Zbrozyna, A.W., The role of active muscle vasodilatation in the alerting stage of the defence reaction, J. Physiol. (Lond.), 171 (1964) 189–202.
3. Bandler, R., Brain mechanisms of aggression as revealed by electrical and chemical stimulation: suggestion of a central role for the midbrain periaqueductal grey region, In: Progress in Psychobiology and Physiological Psychology, Vol. 13, Epstein A. and Morrison A. (Eds.), Academic Press, New York, 1988, pp 67–154
4. Bandler, R. and Carrive, P., Integrated defence reaction elicited by excitatory amino acid microinjection in the midbrain periaqueductal grey region of the unrestrained cat, Brain Res., 439 (1988) 95–106.
5. Berman, A.L., The Brain Stem of the Cat. A Cytoarchitectonic Atlas with Stereotaxic Coordinates, The University of Wisconsin Press, Madison, 1968.