@book { ErfolgsfaktorQuereinstieg,
    title = "Erfolgsfaktor Quereinstieg ",
    author = "Christina {Hansen} and Walter {Gusterer}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16586",
    url = "https://www.peterlang.com/document/1058155"
}