@incollection{, address = {}, author = {Pardi, Renzo}, booktitle = {Topografia urbana e vita cittadina}, keywords = {Gubbio; Mittelalter}, pages = {755-765}, title={Gubbio medievale}, uniqueid = {263258}, url = {http://opac.regesta-imperii.de/id/263258}, year = {1974} }