@book { GerhardFriedrichMller17051783,
    title = "Gerhard Friedrich Müller (1705-1783)",
    subtitle = "Historiker, Geograph, Archivar im Dienste Russlands",
    author = "Peter {Hoffmann}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100118"
}