5Pedro Conceicao,Pedro Ferreira.The Young Person,s Guide to the Theil Index:Suggesting Intuitive Interpretations and Exploring Analytical Applications.UTIP Working Paper Number 14.2000,February:22-24.
6O'Donnell O A,Wagstaff A.Analyzing health equity using household survey data:a guide to techniques and their implementation[M].World Bank Publications,2008.