Economies of scale and the volume of intra-industry trade , Economics Letters v74, 2001, pp127-132, (with Nicolas  Schmitt).

    Using a model of monopolistic competition with traded and non-traded goods (i.e. heterogeneous exporters), this paper establishes a positive link between scale economies, the volume of intra-industry trade and the share of trade in total production. These results are consistent with empirical findings. (pdf file)