MAP20078038909 Demange, Gabrielle Social security with heterogeneous populations subjects to demographic shocks / Gabrielle Demange, Guy Laroque En: The Geneva Risk and Insurance Review. - The Netherlands : The Geneva Association, 1991-2010 = ISSN 0926-4957. - 01/06/2001 Número 1 26 2001 , p. 5-24 I. Laroque, Guy . II. Title.