Research in Arabia, 1987 and 1992: visits to King Khalid and National Wildlife Research Centres (Saudi Arabia), Al Wabra Wildlife Farm (Qatar), Al-Areen Wildlife Park and Reserve (Bahrain) and Al Ain Zoo (United Arab Emirates)
1989 A catalogue of the genus Gazella. In A. Dixon & D. Jones eds., Conservation and Biology of Desert Antelopes, 193-8.
1989 The gazelles of the Arabian peninsula. In A.H. Abu-Zinada, P.D. Goriup and I.A. Nader, eds., Wildlife Conservation and Development in Saudi Arabia, 237-48.
1993 (with A. Greth, D. Williamson, G. Schwede, M. Vassart). Bilkis gazelle in Yemen - status and taxonomic relationships. Oryx, 27:239-244.
1996 Taxonomic diversity in Arabian gazelles: the state of the art. Pp 8-39 in A.Greth, C.Magin & M.Ancrenaz (eds.), Conservation of Arabian Gazelles. National Commission for Wildlife Conservation and Development, Riyadh, Saudi Arabia.
1997 The taxonomy of Arabian Gazelles. In K.Habibi, A.H.Abuzinada & I.A.Nader (eds.), The Gazelles of Arabia, Riyadh: National Commission for Wildlife Conservation and Development, Publication No.29, English Series, pp.24-51.
Queen of Sheba's Gazelle (Gazella bilkis
Saudi Gazelle (Gazella saudiya)
Arabian Gazelle (Gazella cora) at Al Wabra