LG Aachen, Urteil vom 9. April 2013, Az. 12 O 394/12, Volltext Rn 4.
touregypt.net
«Siege warfare in ancient Egypt». Tour Egypt. Consultado el 23 de mayo de 2020. «...we find a pair of Middle Kingdom soldiers advancing towards a fortress under the protection of a mobile roofed structure. They carry a long pole that was perhaps an early battering ram.»