@book { GeistesGegenwart,
    title = "Geistes-Gegenwart",
    subtitle = "Vom Lesen, Denken und Sagen des Glaubens- Festschrift für Peter Hofer, Franz Hubmann und Hanjo Sauer",
    author = "Franz {Gruber} and Christoph {Niemand} and Ferdinand {Reisinger}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106390"
}