MAP20090056619 Vidal Meliá, Carlos Automatic balance mechanisms in pay-as-you-go pension systems / Carlos Vidal Meliá, María del Carmen Boado Peñas, Ole Settergren En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 01/04/2009 Tomo 34 Número 2 - 2009