@book { ArbeitsmarktmobilittinhheremLebensalter,
    title = "Arbeitsmarktmobilität in höherem Lebensalter",
    author = "Martina {Kattein}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14916",
    url = "https://www.peterlang.com/document/1110722"
}