@book { EleonoreKalkowskaDramen,
    title = "Eleonore Kalkowska.  Dramen",
    subtitle = "Josef  Minus x Minus = Plus  Zeitungsnotizen",
    author = "Agnes {Trapp}",
    year = "2008",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1105765"
}