{"id":"000109576","type":"article","title":"Prospecciones en torno a las tierras de Umar ibn Hafsun","publisher":"Universitat.","publisher-place":"Barcelona","pages":"13-22","container-title":"Acta historica et archaeologica mediaevalia, 23/24.2002/03","author":[{"family":"Riu Riu","given":"Manuel 1929-"}],"issued":{"raw":"2003"}}