O. Siren, Chinese Sculpture from the Fifth to the Fourteenth Centuries, London, 1925, pl. 128A and vol. I, p. 33.
S. Matsubara, 'On the Stone Images of the Northern Wei Dynasty of China in Fukien Provence' (in Japanese), Kokka 753, 1954, pp. 355-366, fig. 6.
J.M. James, 'Some Iconographic Problems in Early Daoist-Buddhist Sculptures in China', Archives of Asian Art, XLII, 1989, pp. 71-76, fig. 5.