Recent theoretical developments have incorporated endogenous multinational firms into the general-equilibrium model of trade. One simple taxonomy separates the theory into vertical' models in which firms geographically separate activities by stages of production and horizontal' models of...

An important component of Robert Lipsey's work has been his research on multinational firms, and his careful documentation of their behavior in terms of production and intra-firm trade. In this paper, we extend recent theory referred to as the knowledge-capital model', which simultaneously...

Beginning in the early 1980s, theoretical analyses have incorporated the multinational firm into the microeconomic, general-equilibrium theory of international trade. Recent advances indicate how vertical and horizontal multinationals arise endogenously as determined by country characteristics,...

What we term the firm includes three principal assumptions. First, services of knowledge-based and knowledge-generating activities, such as R&D, can be geographically separated from production and supplied to production facilities at low cost. Second, these knowledge-intensive activities are...