@book { DatenbanktuningundderenWirkungsweise,
    title = "Datenbanktuning und deren Wirkungsweise",
    author = "Sebastian {Wenzky}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836617802",
    url = "https://m.diplom.de/document/226061"
}