@book { MarieluiseFleisserPioniereinIngolstadt,
    title = "Marieluise Fleisser «Pioniere in Ingolstadt»",
    author = " {Anonym}",
    year = "1982",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1071751"
}