| Schiestl, F.P., Ayasse, M., Paulus, H.F., Löfstedt, C., Hansson, B.S., Ibarra, F., and Francke, W. 2000. Sex pheromone mimicry in the early spider orchid (Ophrys sphegodes): patterns of hydrocarbons as the key mechanism for pollination by sexual deception. J. Comp. Physiol. 186:567-574. |
| |
| Bergström, G., and Tengö, J. 1974b. Studies on natural odoriferous compounds IX. Farnesyl- and geranyl esters as main volatile constituents of the secretion from dufour's gland in 6 species of Andrena (Hymenoptera, Apidae). Chem. Scripta. 5:28-38. |
| |