@book { InformationsundKaufverhaltenunterZeitdruck,
    title = "Informations- und Kaufverhalten unter Zeitdruck",
    author = "Hans-Joachim {Knappe}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072451"
}