Saleh, Saleh A., et al. “Consolidation Study of Limestone: Sphinx, Giza, Egypt,” in Proceedings of the 7th International Congress on Deterioration and Conservation of Stone: held in Lisbon, Portugal, 15-18 June 1992, Jose Delgado Rodrigues, ed. Lisbon: Laboratorio Nacional de Engenharia, 1992.

Saleh, Saleh A., et al. “Consolidation Study of Limestone: Sphinx, Giza, Egypt,” in Proceedings of the 7th International Congress on Deterioration and Conservation of Stone: held in Lisbon, Portugal, 15-18 June 1992, Jose Delgado Rodrigues, ed. Lisbon: Laboratorio Nacional de Engenharia, 1992.