Discussions in Egyptology 36 (1996), pp. 21-23, "A Note on the Geometry of the Star-shafts in the Pyramid of Khufu"
Published Documents
Discussions in Egyptology 31 (1995), pp. 35-45, "The Elaboration of the Giza Site-Plan"
Discussions in Egyptology 29 (1994), pp. 29-36, "The Stellar Geometry of the Great Pyramid"