1. L. Fowden and A. Smith, Phytochemistry7, 809 (1968).
2. L.I. Gilbert, ed., The juvenile Hormones, Plenum Press, New York 1976.
3. E. Lee, D.A. Schooley, M.S. Hall and K.J. Judy, J. chem. soc. chem. Commun.1978, 290.
4. M.J. Coon, F.P. Kupiecki, E.E. Dekker, M.J. Schlesinger and A. Del Campillo-Campbell in: Ciba Found. Symp. Biosynthesis Terpenes and Sterols, p. 62, 1958; D. Mertz, Plant Cell Physiol.11, 273 (1970).
5. S. Bernasconi, A. Corbella, P. Gariboldi and G. Jommi, Gazz. chim. ital.107, 95 (1977).