The effect on national welfare of uneven technical progress and eli mination of a firm is analyzed under the existence of a Cournot oligopolistic sector. An increase in the share of an inefficient firm, owing to its innovations, results in a shift of production from more efficient firms to the...

In this paper, the authors examine the question of optimal tariffs when producers and sellers are different entities. A number of alternative market structures are considered. It is found that the sign of the optimal tariff may depend on the nature of the producer-seller relationship, viz., who...