@book { BauordnungenundBaupolizei,
    title = "Bauordnungen und Baupolizei",
    subtitle = "Zur Entwicklungsgeschichte zwischen 1850 und 1950",
    author = "Ekke {Feldmann}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108030"
}