Why Did the Welfare Rolls Fall During the 1990's? The Importance of Entry
分析1990年代美国福利名册人数下降的原因，重点考察新进入者减少的作用，对研究福利改革和劳动力市场的学者有参考价值。
Why Did the Welfare Rolls Fall During the 1990's? The Importance of Entry by Jeffrey Grogger, Steven J. Haider and Jacob Klerman. Published in volume 93, issue 2, pages 288-292 of American Economic Review, May 2003