@book { BusinessImprovementDistricts,
    title = "Business Improvement Districts",
    author = "Annette {Vollmer}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0338-0",
    url = "https://www.peterlang.com/document/1052399"
}