@book { ZurkartellrechtlichenKonzeptionFranzBhms,
    title = "Zur kartellrechtlichen Konzeption Franz Böhms",
    author = " {Anonym}",
    year = "1981",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1071783"
}