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*1001 $aLachance, Marie-Eve$0(NO-TrBIB)2058121$_85192400
*24510$aGuaranteeing defined contribution pensions :$bthe option to buy-back a defined benefit promise$cMarie-Eve Lachance, Olivia S. Mitchell
*260  $aCambridge, Mass.$bNBER$c2002
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