英文文献：Market Power And Cost-Efficiency Effects Of The Market Concentration In The U.S. Nitrogen Fertilizer Industry
英文文献作者：Kim, C.S.,Hallahan, Charles B.,Taylor, Harold,Schluter, Gerald E.
英文文献摘要：
This article examines the effects of increasing market concentration level in the U.S. nitrogen fertilizer industry. Results indicate that the costs of market power are greater than the benefits of market concentration, in terms of manufacturing cost efficiency. To provide a stable nitrogen fertilizer supply at a relatively low price, it may be necessary to control natural gas price and/or reduce new import barriers from Middle East and former member states of the Soviet Union, where low cost gas is produced as a byproduct.