1. An overview and evaluation of composite indices of development;F Booysen;Social Indicators Research,2002
2. The Absolute Correlation;C Bradley;The Mathematical Gazette,1985
3. Using Principal Components to produce an Economic and Social Development Index: An Application to Latin America and the U.S;M B Cahill;Atlantic Economic Journal,2001
4. Measurement of Human Development: Evolution of the Human Development Index;S ? Jahan;The Advanced Theory of Statistics,1968