1. USDA-NASS, 2004–2005 Statistical highlight of US agriculture: Crops; 2006 [cited 2006 June 23]. Available from: http://www.usda.gov/nass/pubs/stathigh//2005/cropindex.htm.
2. USDA-FAS, World apple situation [cited 2006 June 23, 2006]; 2005. Available from: http://www.fas.usda.gov/htp/horticulture/Apples.
3. Use of volatile metabolite profiles to discriminate fungal diseases of Cortland and Empire apples;Vikram;J. Plant Pathol.,2004
4. NE179, Technology and principles for assessing and retaining postharvest quality of fruits and vegetables, 2001. Available at: http://www.nimss.umd.edu/homepages/home.cfm?trackID=23.
5. Electronic sensing of aromatic volatiles for quality sorting of blueberries;Simon;J. Food Sci.,1996