@book { Relevanceofdesignpatternswithinwebapplications,
    title = "Relevance of design patterns within web applications",
    author = "Niels {Lange}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842815612",
    url = "https://m.diplom.de/document/228533"
}