@book { KonfliktundpdagogischeIntervention,
    title = "Konflikt und pädagogische Intervention",
    author = "Özkan {Ergen} and Volker {Lenhart}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097918"
}