Stern, V.M., Smith, R.F., Van den Bosch, R., & Hagen, K.S. 1959 The integrated control concept.. Hilgardia 29: 81-101.

Notes: Icerya purchasi was used as an example of successful integrated control. It was introduced into California from Australia on acacia in 1868, but was eventually controlled by means of importation of two of its natural enemies (Rodolia cardinalis and Cryptochaetum iceryae.