@book { DiedramaturgischeKonstruktiondesParsifalvonRichardWagner,
    title = "Die dramaturgische Konstruktion des Parsifal von Richard Wagner",
    author = "Heiko {Jacobs}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093937"
}