@book { DieInsolvenzsicherungbetrieblicherAltersversorgung,
    title = "Die Insolvenzsicherung betrieblicher Altersversorgung ",
    author = "Elisabeth {Sechtem}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16893",
    url = "https://www.peterlang.com/document/1058884"
}