Salama, H.S., & Saleh, M.R. 1984 Components of the essential oil of three citrus species in correlation to their infestation with scale insects.. Zeitschrift für Angewandte Entomologie 97: 393-398.

Notes: Aonidiella aurantii and Chrysomphalus ficus; Citrus spp. with higher hydrocarbon contents more susceptible, while those with higher alcoholic terpene content more resistant to insect infestation.