Shafik, M., & Husni, M. 1938 The ideal spray emulsion for the control of scale insects on citrus in Egypt.. Bulletin de la Société Fouad 1er d'Entomologie 22: 357-395.

Notes: Literature review of success of emulsions; species mentioned in Egypt include Chrysomphalus ficus, C. aurantii, Mytilaspis, Asterolecanium and Lecanium.