TY - GEN AU - Börsch-Supan,Axel H. AU - Reil-Held,Anette AU - Wilke,Christina B. TI - How an unfunded pension system looks like defined benefits but works like defined contributions: : the german pension reform KW - Pensión de jubilación KW - 1992-2007 KW - Alemania N1 - Contiene bibliografía ER -