英文文献：NAFTA Impacts on the U.S. Competitiveness and Trade: Beef, Pork, and Poultry-北美自由贸易协定对美国竞争力和贸易的影响:牛肉、猪肉和家禽
英文文献作者：Henneberry, Shida Rastegari,Mutondo, Joao E.
英文文献摘要：
The restricted source differentiated almost ideal demand system (RSDAIDS) is used to estimate source differentiated meat demand for U.S. NAFTA partners. In the Canadian meat market, the estimated price and expenditure elasticities indicate that Canadian beef has a competitive advantage compared to U.S. beef, while U.S. pork has a competitive advantage compared to Canadian pork. In the Mexican meat market, the estimated expenditure elasticities indicate that an increase in Mexican meat expenditures would lead to an increase in the demand for meats from all sources. Seasonality and Canadian and U.S. BSE outbreaks had small impacts on Canadian and Mexican meat demand.

限制来源差异化几乎理想需求系统(RSDAIDS)被用来估计美国北美自由贸易协定伙伴的来源差异化肉类需求。在加拿大肉类市场，估计的价格和支出弹性表明，加拿大牛肉相对于美国牛肉具有竞争优势，美国猪肉相对于加拿大猪肉具有竞争优势。在墨西哥肉类市场，估计的支出弹性表明，墨西哥肉类支出的增加将导致对各种来源肉类需求的增加。季节性和加拿大和美国的疯牛病爆发对加拿大和墨西哥的肉类需求影响不大。