@article { PatrickJGearyDasmittelalterlicheJahrtausend7GttingenWallsteinVerlag202060S,
    title = "Patrick J. Geary, . Das mittelalterliche Jahrtausend, 7. Göttingen: Wallstein Verlag, 2020, 60 S.",
    author = "Albrecht {Classen}",
    year = "2022",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    journal = "Mediaevistik",
    number = "1",
    volume = "34",
    doi = "10.3726/med.2021.01.75",
    url = "https://www.peterlang.com/document/1238895"
}