MAP20160009309 Pitacco, Ermanno Guarantee structures in life annuities : a comparative analysis / Ermanno Pitacco En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 04/01/2016 Volumen 41 Número 1 - enero 2016 I. Title.