@book { DidacticOrganizationofTeachingandLearningProcesses,
    title = "Didactic Organization of Teaching and Learning Processes",
    subtitle = "A Textbook for Schools and Adult Education",
    author = "Klaus {Götz} and Peter {Häfner}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096187"
}