Salama, H.S., Amin, A.H., & Hawash, M. 1972 Effect of nutrients supplied to citrus seedlings on their susceptibility to infestation with the scale insects, Aonidiella aurantii (Maskell) and Lepidosaphes beckii (Newman) (Coccoidea).. Zeitschrift für Angewandte Entomologie 71: 395-405.

Notes: Summary in German; effect of nutrient solutions on the increase of A. aurantii and L. beckii infesting citrus seedlings varied by species.