References
Chwalibog, A. (2002): General aspects of nutrient metabolism in birds. Proceeding of World Ostrich Congress, 26-29 September, 2002, Warsaw, Poland.
Deeming, D.C. (1997): Ratite egg incubation a practical guide. Ratite Conference 1997.
Huchzermeyer, F.W. (1998): Diseases of ostrich and other ratites. Published by Agriculture Research Council.
Khalifa (2002): Ostrich Slaughtering techniques, Conference of Slaughtering procedures on bases of Islamic rules and practice, Saleh Kamel Center for Islamic Economy, 9-10 Feb., 2002.