@book { DigitaleMachtkonzentrationvonGoogleSearch,
    title = "Digitale Machtkonzentration von Google Search",
    author = "Steffen {Uphues}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b20920",
    url = "https://www.peterlang.com/document/1342561"
}