@book { HeiesBleifrkaltesGold,
    title = "Heißes Blei für kaltes Gold",
    author = "John F. {Beck}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Germany",
    url = "https://uksakebooks.grin.com/document/519989"
}