@book { ZurStrukturderVorgesellschaften,
    title = "Zur Struktur der Vorgesellschaften",
    author = "Martin {Born}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05401-9",
    url = "https://www.peterlang.com/document/1049139"
}