@book { LehrerdesGlaubens,
    title = "Lehrer des Glaubens",
    subtitle = "Theologisch-biographische Vorträge und Studien",
    author = "Bernhard {Maurer}",
    year = "2008",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104793"
}