Franco, Á. (2005). Observations on the Illustrations of the Silos Beatus Manuscript. In T. Martin & J. A. Harris (ed.), Church, State, Vellum and Stone. Essays on Medieval Spain in Honor of John Williams (pp. 207-233) . .

Betschart, A. (1992). Zwischen zwei Welten. Illustrationen in Berichten westeuropäischer Jerusalemreisender des 15. und 16. Jahrhunderts. In (pp. 3-6, 159-161) . .