@book { FreinpaarUnzenBlech,
    title = "Für ein paar Unzen Blech",
    author = "Jasper P. {Morgan}",
    year = "2016",
    publisher = "Uksak E-Books",
    address = "Lengerich, Germany",
    url = "https://uksakebooks.grin.com/document/338322"
}