Krugman, Paul2017-12-132017-12-132013-050889-3365http://www.nber.org/chapters/c12759.pdfA chapter from from the volume entitled NBER Macroeconomics Annual 2012, Volume 27 (proceedings of a conference of the National Bureau of Economic Research that took place in April, 2012). Volume editors: Daron Acemoglu, Jonathan Parker and Michael Woodford. Click on the link above to access the chapter.enKrugman, PaulSocial SciencesEconomicsUnited StatesBook chapter