1. Batson, O. V.: Anatomical problems concerned in the study of cerebral blood flow. Fed. Proc.3, 139?144 (1944).
2. Findlay, J. D., Hales, J. R. S., Storie, G. A. T., Thompson, G. E.: A head clamp for use in large animal surgery. J. Physiol. (Lond.)198, 55?56P (1968).
3. Hales, J. R. S.: Determination of the effect of climatic stress on regional brain and spinal cord blood flow, using radioactive microspheres. Proc. Aust. physiol. pharmacol. Soc.2, 45?46 (1971).
4. Hales, J. R. S.: Tissue blood flow and cardiorespiratory function in the sheep. J. Physiol. (Lond.) (in press).
5. Hales, J. R. S.: The effects of heart stress on total and regional blood flow to the brain and spinal cord of the sheep. J. Physiol. (Lond.) (in press).