@book { VondenJuryfreienzurmusicaviva,
    title = "Von den «Juryfreien» zur «musica viva»",
    author = "Renate {Ulm} and Bettina {Hasselbring}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135482"
}