@book { InnovativeFremdsprachendidaktik,
    title = "Innovative Fremdsprachendidaktik",
    subtitle = "Kolloquium zu Ehren von Wolfgang Butzkamm",
    author = "Ludwig {Deringer}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097943"
}