?url_ver=Z39.88-2004&rft_id=10.1007%2F978-94-015-8441-8_3&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Gonnot%2C+J.-P.&rft.aulast=Gonnot&rft.aufirst=J.-P.&rft.date=1995&rft.issn=1381-3579&rft.isbn=978-94-015-8441-8&rft.title=Demographic+Changes+and+the+Pension+Problem%3A+evidence+from+twelve+countries&rft.btitle=Social+Security%2C+Household%2C+and+Family+Dynamics+in+Ageing+Societies&rft.genre=bookitem