Barbara G. Aston, James A. Harrell, Ian Shaw (2000). Paul T. Nicholson & Ian Shaw editors. "Stone," in Ancient Egyptian Materials and Technology, Cambridge, 5–77, pp. 46–47. Also note: Barbara G. Aston (1994). "Ancient Egyptian Stone Vessels," Studien zur Archäologie und Geschichte Altägyptens 5, Heidelberg, pp. 23–26. (See on-line posts: [1] e [2].)