@book { Bonstettiana,
    title = "Bonstettiana",
    subtitle = "Historisch-kritische Ausgabe der Briefkorrespondenzen Karl Viktor von Bonstettens und seines Kreises 1753-1832- Band III: 1776-1780",
    author = "Peter und Doris {Walser-Wilhelm}",
    year = "2000",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1089333"
}