Wetzstein, Thomas: The Deposition of Frederick II - a Public Lesson in Procedural Law. In: Goering, Joseph ; Dusil, Stephan ; Thier, Andreas (Hrsg.): Proceedings of the Fourteenth International Congress of Medieval Canon Law.Toronto, 5-11 August 2012. -
Città del Vaticano : Biblioteca Apostolica Vaticana, 2016. - S. 949-964. - (Monumenta iuris canonici : Series C, Subsidia ; 15)
ISBN 978-88-210-0965-5