1. 1b. P. Ney (1985 ) Dissertation, University of Cologne.
2. Hydrocarbons in pyrethrum cuticle wax
3. Composition of leaf surface waxes of Triticum species: Variation with age and tissue
4. 4. P. K. Stumpf, J. Bonner, and V. E. Varner (1965 ) inPlant biochemistry () p.323 , Academic Press, New York.