00387pab a2200133 454500008004000000100002600040245008900066260000900155300001400164362000800178650002000186700002000206773002700226180718b2008 xxu||||| |||| 00| 0 eng d aKoethenbuerger, Marko aWhy are more redistributive social security systems smaller? A median voter approach c2008 ap.275-92. aApr aSocial security aPoutvaara, Panu aOxford Economic Papers