Fügedi Erik: Castle and society in medieval Hungary, 1000-1437 - Studia historica Academiae Scientiarum Hungaricae 187. (Budapest, 1986)
S TU DIAJj[l S Т О RI С A Academiae Scientiarum Hungaricae E. FÜGEDI CASTLE AND SOCIETY IN MEDIEVAL HUNGARY (1000-1437)