@book { RulandausderFederseinerFrauen,
    title = "Rußland aus der Feder seiner Frauen",
    author = "Frank {Göpfert}",
    year = "1992",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12365",
    url = "https://www.peterlang.com/document/1066855"
}