We reconcile conflicting evidence on the magnitude of the elasticity of substitution of land for capital, which is a key determinant of the relationship between the price of land and the density of land use. We first compare the performance of classic estimation approaches with a new estimation...

In this paper, we undertake an in-depth inquiry into the nature of sharing externalities, and study how they affect the market outcome. We show that the key thing for understanding sharing externalities is the interplay between two forces: the specialization/complexity effect, on the one hand,...