H. Klein, 'Eastern Objects and Western Desires: Relics and Reliquaries between Byzantium and the West', Dumbarton Oaks Papers 58 (2004), pp. 283–314.
449
Halphen and Poupardin, Chronique des comtes d'Anjou, pp. 237–8.
450
A. Gieysztor, 'The Genesis of the Crusades: The Encyclical of Sergius IV', Medievalia et Humanistica 5 (1949), pp. 2–23 and 6 (1950), pp. 3–34. Однако см. также: H. Schaller, 'Zur Kreuzzugsenzyklika Papst Sergius IV', in H. Mordek (ed.), Papsttum, Kirche und Recht im Mittelalter. Festschrift für Horst Fuhrmann (Tübingen, 1991), pp. 135–54.
