{{sfn | Frankel | Pissarides | 2007 | p=}}

* {{cite book | last=Frankel | first=Jeffrey A. | last2=Pissarides | first2=Christopher A. | title=NBER International Seminar on Macroeconomics 2005 | publisher=National Geographic Books | publication-place=Cambridge, Mass. | date=2007-05-25 | isbn=0-262-56229-4}}

<ref name="y286">{{cite book | last=Frankel | first=Jeffrey A. | last2=Pissarides | first2=Christopher A. | title=NBER International Seminar on Macroeconomics 2005 | publisher=National Geographic Books | publication-place=Cambridge, Mass. | date=2007-05-25 | isbn=0-262-56229-4 | page=}}</ref>