1. Blümel S, Hausdorf H, 1990. Investigations on the control of the hop aphid Phorodon humuli Schr. with potassium soap. Pflanzenschutz (Wien) (3). (In Germany)
2. Monitoring and Mating Disruption of Pseudococcus comstocki by Uing a Sex Pheromone in Pear Orchards
3. Choi KH, Lee DH, Song YY, Nam JC, Lee SW, 2009. Current status on the occurence and management of disease, insect and mite pests in the non-chemical or organic apple orchards. Proceedings of the Korean Society of Organic Agriculture Conference: 45-56.
4. Choo HY, Kaya HK, Lee SM, Kim TO, Kim JB, 1991. Laboratory evaluation of entomopathogenic nematodes, Steinernema carpocapsae and Heterorhabditis bacteriophora against some forest insect pests. Korean J. Appl. Entomol. 30(4):227-232. (In Korean)
5. Cranshaw WS, 1996. Insect control: soaps and detergents. Cooperative Extension, Colorado State University, Fact Sheet No. 5.547.