@book { KooperationundinteraktivesLerneninderkonomie,
    title = "Kooperation und interaktives Lernen in der Ökonomie",
    author = "Adelheid {Biesecker} and Wolfram {Elsner} and Klaus {Grenzdörffer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093878"
}