@book { DerBruch, title = "Der Bruch", subtitle = "Ursachen und Konsequenzen des Umsturzes der Verfassungsordnung Polens 2015–2016", author = "Klaus {Bachmann}", year = "2016", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/978-3-653-07033-0", url = "https://www.peterlang.com/document/1050720" }