@book { FrderungdeskooperativenLernensberComputernetze,
    title = "Förderung des kooperativen Lernens über Computernetze",
    author = "Johannes {Bruhn}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090374"
}