@book { EinfhrungindieStatistikmitR,
    title = "Einführung in die Statistik mit R",
    author = "Andreas {Behr} and Ulrich {Pötter}",
    year = "2014",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220935"
}