@book { DerSkontrofhrerandendeutschenWertpapierbrsen,
    title = "Der Skontroführer an den deutschen Wertpapierbörsen",
    author = "Alexander {Hofmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106990"
}