1. H. L. House, Physiology of Insects, vol. 2. Ed M. Rockstein. Academic Press, London 1965.
2. R. H. Dadd, Chemical Zoology, vol. 5. Ed. M. Florkin and B. T. Sheer, Academic Press, London 1970.
3. V. B. Wigglesworth, Biochem. J.21, 797 (1927).
4. M. F. Day and R. F. Powning, Aust. J. scient. Res.2, 175 (1949).
5. M. F. Day, Aust. J. scient. Res.4, 136 (1951).