@book { LondonBerlin,
    title = "London – Berlin",
    subtitle = "Authenticity, Modernity, and the Metropolis in Urban Travel Writing from 1851 to 1939",
    author = "Hagen {Schulz-Forberg}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1100693"
}