Fresco and wall painting

P. Mora, L. Mora, P. Philippot. Conservation of Wall Paintings, p. 140. Tintori, Meiss. The Painting of the Life of St. Francis in Assisi. N. York, 1967, p. 3; D. V. Thompson. The Materials and Techniques of Medieval Painting, 1956, 69-70; S. Tsuji. The Origin of Buon Fresco. Zeitschrift für Kunstgeschichte 46, 2, 1983, 215-222.