【作者(必填)】
W. Walker Hanlon1,2,†
【文题(必填)】
Necessity Is the Mother of Invention: Input Supplies and Directed Technical Change
【年份(必填)】
Volume 83, Issue 1, pages 67–100, January 2015
【全文链接或数据库名称(选填)】
http://onlinelibrary.wiley.com/doi/10.3982/ECTA10811/abstract