<a href="http://www-oi.uchicago.edu/OI/AR/01-02/01-02_Yemen.html">Project for the Archaeology of Yemeni Terraced Agriculture: 2001-2002 Oriental Institute Annual Report</a>.

Wilkinson, Tony J. <a href="http://www-oi.uchicago.edu/OI/AR/01-02/01-02_Yemen.html">Project for the Archaeology of Yemeni Terraced Agriculture: 2001-2002 Oriental Institute Annual Report</a>. <em>Oriental Institute Annual Report</em>, Chicago Oriental Institute 2002. (Article)