@book { DieNutzungdesInternetsdurchKinder,
    title = "Die Nutzung des Internets durch Kinder",
    author = "Susanne {Richter}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097309"
}