@book { GanzheitlichesDenken,
    title = "Ganzheitliches Denken",
    subtitle = "Festschrift für Arnulf Rieber zum 60. Geburtstag",
    author = "Erwin {Schadel}",
    year = "1996",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1116259"
}