@book { HandelsmarkenundRetailBrands,
    title = "Handelsmarken und Retail Brands",
    author = "Frederik {Böttcher}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03114-0",
    url = "https://www.peterlang.com/document/1046951"
}