@book { GrundwissenAktienBrseWertpapierhandel,
    title = "Grundwissen Aktien, Börse & Wertpapierhandel",
    author = "Oliver {Groß}",
    year = "2022",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1245663"
}