data. Our results suggest that the speculation hypothesis has more explanatory power than the productivity hypothesis in …

The Paper approaches business cycles in terms of extrinsic uncertainty related, not to dynamic indeterminacy of … static indeterminacy of free entry oligopolistic equilibria within each period. We consider an OLG economy in which firms … dynamic indeterminacy, we can weaken the condition on the degree of increasing returns, which may be arbitrarily small (with a …