@book { OttoKoellreutter18831972,
    title = "Otto Koellreutter 1883-1972",
    subtitle = "Sein Leben, sein Werk, seine Zeit",
    author = "Jörg {Schmidt}",
    year = "1995",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1115482"
}