1. Whitton, G. C. Comparative Physiology of Thermoregulation Vol. 1, 15–77 (Academic, London, 1970).
2. Heinrich, B. Am. Nat. 111, 623–640 (1977).
3. Hynes, H. B. N. A. Rev. Ent. 21, 135–153 (1976).
4. Hynes, H. B. N. Aust. J. Zool. Suppl. 29, 37–52 (1974).
5. Mani, M. S. Introduction to High Altitude Entomology (Methuen, London, 1962).