1. Who gives foreign aid to whom and why?;Alesina;J. Econ. Growth,2000
2. Fractionalization;Alesina;J. Econ. Growth,2003
3. Stability and change in the Freedom House political rights and civil liberties measures;Armstrong;J. Peace Res.,2011
4. Azevedo, João Pedro, 2011. ‘wbopendata: Stata module to access the World Bank databases. Statistical Software Components S457234, Boston College Department of Economics. 〈http://ideas.repec.org/c/boc/bocode/s457234.html〉.
5. The Economic Aid of the PR China to Developing and Socialist Countries;Bartke,1989