Benešovská, Klára
Hildebert and Everwinus. "Of Mice and Men" or the King of Bohemia, his counsellors and their artists.
The Story of Prague Castle. Prague: Prague Castle Administration, 2003, s. 141-145. ISBN 80-86161-73-0
R&D Projects: GA AV ČR KSK9056118
http://hdl.handle.net/11104/0066366