@book { 20JahrePolysthetischeErziehungamMozarteumSalzburg,
    title = "20 Jahre Polyästhetische Erziehung am Mozarteum Salzburg",
    author = "Michaela {Schwarzbauer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091921"
}