This paper presents a trade model with capital and labor as factors of production. The main contribution of this paper is that it considers a new type of firm heterogeneity, which is empirically relevant: firms in this paper differ with respect to their factor shares in production. Therefore,...

The traditional trade theory predicts that trade in goods perfectly substitutes for direct movement of factors. This equivalence between goods trade and factor movements, however, depends crucially on assumptions about the production. This paper establishes necessary and sufficient conditions...