@book { EmpirieundSchulbuch,
    title = "Empirie und Schulbuch",
    subtitle = "Vorträge des Giessener Symposiums zur Leseforschung",
    author = "Swantje {Ehlers}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136197"
}