Resistance mechanisms in sweetpotato whitefly (Homoptera: Aleyrodidae) populations from Sudan, Turkey, Guatemala, and Nicaragua. Dittrich, V., Ernst, G. H., Ruesch, O., & Uk, S. Journal of Economic Entomology, 83(5):1665--1670, 1990.
Resistance mechanisms in sweetpotato whitefly (Homoptera: Aleyrodidae) populations from Sudan, Turkey, Guatemala, and Nicaragua [link]Paper  bibtex   
@article{ dittrich_resistance_1990,
  title = {Resistance mechanisms in sweetpotato whitefly ({Homoptera}: {Aleyrodidae}) populations from {Sudan}, {Turkey}, {Guatemala}, and {Nicaragua}},
  volume = {83},
  shorttitle = {Resistance mechanisms in sweetpotato whitefly ({Homoptera}},
  url = {http://jee.oxfordjournals.org/content/83/5/1665.abstract},
  number = {5},
  urldate = {2015-04-19TZ},
  journal = {Journal of Economic Entomology},
  author = {Dittrich, Volker and Ernst, Gert H. and Ruesch, Othmar and Uk, Solang},
  year = {1990},
  pages = {1665--1670}
}

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