@book { DerWerderscheMarktinBerlin,
    title = "Der Werdersche Markt in Berlin",
    author = "Helmut {Zschocke}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17346",
    url = "https://www.peterlang.com/document/1111264"
}