"Caterpillar D9". www.Israeli-Weapons.com website. www.Israeli-Weapons.com LTD. Retrieved 24 July 2013. The Israeli Armored D9 is a Caterpillar D9 bulldozer that been modified by IMI for IDF.[permanent dead link]
oemoffhighway.com
Berry, Thomas (18 April 2017). "The Dual D9". OEM Off Highway. Retrieved 2 January 2020.