Cave as Canvas: Hidden Images of Worship Along the Ancient Silk Routes. [online] Smithsonian Freer Gallery of Art and Arthur M. Sackler Gallery, the National Museum of Asian Art, 2004. http://www.asia.si.edu/exhibitions/online/cave/default.htm (1 March 2004).

Cave as Canvas: Hidden Images of Worship Along the Ancient Silk Routes. [online] Smithsonian Freer Gallery of Art and Arthur M. Sackler Gallery, the National Museum of Asian Art, 2004. http://www.asia.si.edu/exhibitions/online/cave/default.htm (1 March 2004).