@book { FiltertechnikeninderTopologieoptimierung,
    title = "Filtertechniken in der Topologieoptimierung",
    author = "Sergej {Oks}",
    year = "2014",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/270419"
}