The gravity model is used extensively to investigate the trade flow effects of Regional Trade Agreements (RTAs). A notable feature common to previous research is the use of aggregate trade data. These studies typically report conflicting, and even negative results of the effect of RTAs on...

The economic geography of the United States' energy landscape changed rapidly with domestic expansion of the natural gas sector. Recent work with smooth transition parameter models is extended to an establishment location model estimated using Poisson regression to test whether expansion of this...