T. L. Dobecki and R. M. Schoch, 1992. Seismic Investigations in the Vicinity of the Great Sphinx of Giza, Egypt.  Geoarchaeology, v. 7, no. 6, pp. 527-544.  [Note that since the time when this article was published, the name of my college at Boston University was changed from College of Basic Studies to College of General Studies.]