CLASP Handlist Book: P. Kitson, ‘Lapidary Traditions in Anglo-Saxon England, part II: Bede’s Explanatio Apocalypsis and Related Works’, Anglo-Saxon England 12 (1983), 73–123, at 115–20 Literary references in: Frithegod of Canterbury and Brioude Octosyllabic verses on the precious stones of the heavenly Jerusalem, 'Cives Celestis'
A Consolidated Library of Anglo-Saxon Poetry