@book { AnlageentscheidungenamAktienmarkt,
    title = "Anlageentscheidungen am Aktienmarkt",
    author = "Jutta {Schmidt}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097534"
}