1. Chapter IV: Statistics of Vegetables and Melons;Agriculture Statistics,2003
2. Lucier, G., Lin, B., Allshouse, J. & Kantor, L. (2002) Factors Affecting Tomato Consumption in the United States. Vegetables and Specialities/VGS-282/November 2000Economic Research Service USDA.http://www.ers.usda.gov/briefing/consumption/gallery/tomatoconsumption.pdf [accessed June 15, 2004].
3. Carotenoid content of thermally processed tomato-based food products;Tonucci;J. Agric. Food Chem.,1995
4. Occurrence of flavonols in tomatoes and tomato-based products;Stewart;J. Agric. Food Chem.,2000