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Wimmer, H., et al. Art and Nature: Studies in Medieval Art and Architecture. Edited by L Cleaver et al., vol. 1, Courtauld Institute of Art, 2009.

Wimmer, H, M Woodworth, T Nickson, M Olympios, G Victoir, H Gearhardt, F Lucchini, K Gerry, L Cleaver, and R Bartal. 2009. Art and Nature: Studies in Medieval Art and Architecture. Edited by L Cleaver, K Gerry, and JM Harris. Vol. 1. Immediations Conference Papers. Courtauld Institute of Art.