@book { WASSERAUTO2018BISZU68KRAFTSTOFFSPAREN,
    title = "WASSER-AUTO 2018 -BIS ZU 68% KRAFTSTOFF SPAREN-",
    author = "Michael {Hardt}",
    year = "2018",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1003675"
}