Ẓafār, Capital of Ḥimyār, Ibb Province, Yemen: first Preliminary Report: Summer 1998 and Autumn 2000, Second Preliminary Report: 2002, Third Preliminary Report: 2003, Fourth Preliminary Report: 2004 - Yule, Paul; Franke, Kristina; Meyer, Cornelius; Nebe, G. Wilhelm; Robin, Christian; Witzel, Carsten (Schriften von Paul Yule zu Arabien., 2007)