1. Clark, K., 1994. Control of Varroa mites in British columbia with either formic acid or Apistan. In: Proceedings of the American Bee Research Conference, Weslaco, TX.
2. Economic thresold for Varroa jacobsoni in the Southeastern USA;Delaplane;Apidologie,1999
3. A new product with formic acid for Varroa jacobsoni control. Part I. Efficacy;Eguaras;J. Vet. Med. (Series B),2001
4. Varroa jacobsoni control with formic acid used in different application ways in subtropical and temperate climates;Eguaras;Apiacta,2001
5. European working group CA3686, 2001. Evaluation of treatment for control of Varroa mites in honeybee colonies. Part I Standards for experimental protocols. http://www.apis.admin.ch.