Elkarmoty, M.; Helal, K.; Ali, M.; Sholqamy, M.; Hamza, A.; Rupfle, J.; Popovych, O.; Maier, B.; Ramirez-Pinero, A.; Schumacher, T.; Procureur, S.; Morishima, K.; Tayoubi, M.; Grosse, C.; Helal, H. Discovery of the North Face Corridor in Khufu Pyramid last seen 4500 years ago using non-destructive techniques. ZfP-Zeitung. 2024 NDT.net