We present a simple two(-country) by two(-good) differental game model of international trade in which the governments of the two countries play a tariff-setting game. We explicitly derive a unilateral optimum tarifff rate and then a Markov-perfect equilibrium pair of tariff strategies...

The Frankel-Romer-Lucas theory of endogenous growth rests on the assumption of knowledge-based externalities and price-taking representative households. It is argued that, in a context of long-run growth, these assumptions are mutually incompatible (that representative households will co-operate...