El-Ebeedy, A., Refai, M., Hegazi, G. Edris, Rashwan, A., N. Allam, and A. Abdel-Aziz,  "Studies on a locally prepared temperature-senstive mutant M. Gallisepticum vaccine in comparison with a commercially prepared vaccine. ",  Proc. 2d. Sci. Conf. Egypt. Vet. Poult. Ass. , Cairo, Egypt. Vet. Poult. Ass. , 1990.