@book { SubjektTheater,
    title = "Subjekt: Theater",
    subtitle = "Beiträge zur analytischen Theatralität- Festschrift für Helga Finter zum 65. Geburtstag",
    author = "Gerald {Siegmund} and Petra {Bolte-Picker}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107677"
}