Bibliographie
Gerhart B. LADNER, « An Additional Note on Hexagonal Nimbi », Images and Ideas in the Middle Ages. Selected studies in History and Art, 1, Roma, Edizioni di Storia e Letteratura, 1983 (Storia e Letteratura. Raccolta di Studi e Testi, 155), p. 167-170
Gerhart B. LADNER, Images and Ideas in the Middle Ages, Selected studies in History and Art, 1
p. 167-170
Etude
Chapitre de livre
ICO. X 1282 (8°)
Recueil d'articles de G. Ladner.