El-Gendy, Essam A., Mostafa K. Nassar, and Ahmed Mostageer. 2007. “Genotype-Environment Interaction in Relation to Heat Tolerance in Chickens 2. Variation in Juvenile Growth of Warm Regions` Oriented Breeds”. International Journal of Poultry Science 6 (5): 322–328. https://doi.org/10.3923/ijps.2007.322.328.