1. The effects of the US Plant Variety Protection Act on wheat genetic improvement;Alston;Research Policy,2002
2. Human Development Index: Methodology and Measurement;Anand,1994
3. A New Data Set of Educational Attainment in the World, 1950–2010;Barro,2010
4. ASTI Global Assessment of Agricultural R&D Spending: Developing Countries Accelerate Investment;Beintema,2012
5. Inventions in the Soviet Union;Blair;International Lawyer,1973