@book { KontrollierterHhenflug,
    title = "Kontrollierter Höhenflug",
    author = "Tove {Blaustedt}",
    year = "2022",
    publisher = "Traumtänzer-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1315554"
}