1. Using USDA’s Thrifty Food Plan to assess food availability and affordability;Andrews;FoodReview,2001
2. Quadratic Engel curves and consumer demand;Banks;The Review of Economics and Statistics,1997
3. Breunig, R., Dasgupta, I., Gundersen, C., Pattanaik, P., 2001. Explaining the food stamp cash-out puzzle. Food Assistance and Nutrition Research Report No. 12, Economic Research Service, US Department of Agriculture, Washington, DC.
4. Bureau of Labor Statistics. Consumer Expenditure Survey, 2002. US Department of Commerce, Washington, DC.
5. Center for Nutrition Policy and Promotion, 1999. Thrifty Food Plan, 1999. Administrative Report. US Department of Agriculture, Washington, DC.