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*1001 $aBiørn, Erik$d1944-$0(NO-TrBIB)90095035$_10553600
*24510$aAge-cohort-time effects in sickness absence :$bexploring a large data set by polynomial regression$cErik Biørn
*260  $aOslo$bUniversity of Oslo, Department of Economics$c2013
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*4901 $aMemorandum / Department of Economics, University of Oslo$vno. 19/2013
*830 0$aMemorandum (Universitetet i Oslo. Økonomisk institutt : trykt utg.)$x0809-8786$vno. 19/2013$w990410975304702201$_13293200
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