1、Credit Shocks andAggregate Fluctuations in an Economy with Production Heterogeneity

Aubhik Khan and Julia K. Thomas

Journal of Political Economy，Vol. 121,No. 6, December 2013

http://www.jstor.org/stable/10.1086/669730

2、The InternationalDiversification Puzzle Is Not as Bad as You Think

Jonathan Heathcote and Fabrizio Perri

Journal of Political Economy，Vol. 121,No. 6, December 2013

http://www.jstor.org/stable/10.1086/669730