1. Differences;Acemoglu;Quarterly Journal of Economics,2001
2. Farm Foreclosures in the United States During the Interwar Period;Alston;The Journal of Economic History,1983
3. Horses vs. Tractors on the Corn Belt;Ankli;Agricultural History,1980
4. The Adoption of the Gasoline Tractor in California;Ankli;Agricultural History,1981
5. Appropriate Technology and Growth;Basu;Quarterly Journal of Economics,1998