1. US Department of Agriculture, Economic Research Service, Agricultural Outlook, AO-168, October 1990. This issue contains several articles concerning the impacts of changing crude oil prices on US agriculture.
2. US Department of Agriculture (USDA), Economic Research Service, Agricultural Outlook, AO-166, Table 36, August 1990, p. 60.
3. Macroeconomics and Reality
4. Dynamic Price Adjustments Between Commercial and Purebred Cattle Markets