@book { DieEntstehungundEntwicklungdesInternets,
    title = "Die Entstehung und Entwicklung des Internets",
    author = "Philip {Dittmar}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656547259",
    url = "https://www.hausarbeiten.de/document/264786"
}