@book { DieCollectioSangermanensisXXItitulorum,
    title = "Die Collectio Sangermanensis XXI titulorum",
    author = "Michael {Stadelmaier}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097864"
}