1. 题目：inequality and growth: what can the data say
   作者：Banerjee A V, Duflo E
   期刊：Journal of economic growth, 2005, 8(3): 267-299.

2. 题目：Natural resoureces and economic growth: the role of investment
   作者：Gulfason T, Zoega G
   期刊：The world economy, 2006, 29(8): 1091-1115.