1. Amrine, J. W. Jr. and Noel, R. 2001.Controlling honey bee mites with essential oils, Final Report to SARE (Sustainable Agriculture Research and Extension, USDA), project number: 98LNE98-105 (usda 98-coop-1-5985), 28 December 200111–11.
2. 2002.Guideline on use of formic acid for Varroa control, 11–11. Wellington, NZ: Ministry of Agriculture and Forestry Biosecurity Authority. Anonymoushttp://www.biosecurity.govt.nz/pests-diseases/animals/varroa/guidelines/formic-acid-guideline.pdf. Accessed 23 Mar 2006