@book { MeasuringPublicPensionLiabilitiesintheEuropeanUnion,
    title = "Measuring Public Pension Liabilities in the European Union",
    author = "Olaf {Weddige}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13542",
    url = "https://www.peterlang.com/document/1068157"
}