1. Geopolitics: Re-visioning world politics;Agnew,2003
2. Legal mechanisms for addressing wartime damage to tropical forests;Austin;Journal of Sustainable Forestry,2003
3. The evolution of cooperation;Axelrod,1984
4. Expending perspectives on transboundary water;Blatter,2001
5. Economic and noneconomic determinants of political democracy in the 1960s;Bollen,1985