The Technological Determinants of the U.S. Energy Industry Structure
估计了美国能源生产者的多产品成本函数，发现大型能源企业的多产品结构部分源于石油和煤炭业务之间的范围经济。
Recent theoretical developments on multiproduct firm costs have increased our understanding of these firms. Yet, to date, empirical analysis of the relationship between multiproduct firm costs and industry structure has been limited. In this paper, the multiproduct nature of US energy producers is explicitly recognized, and a multiproduct cost function estimated for the industry. The empirical results indicate that the multiproduct structure of large energy firms has, at least in part, been motivated by economies of scope between petroleum and coal operations. 27 references, 19 footnotes, 3 figures, 1 table.