Ali, A. M., M. M. Samy, F. O. Fasina, M. K. Hassan, W. H. Kilany, S. El-Mahdy, A. Saad, J. Lubroth, and Y. Jobre. “Field Evaluation of Common Poultry Viral Vaccinesin Egypt: A Need for Reassessmentof the Vaccine Value Chain”. Veterinaria Italiana, vol. 55, no. 3, Oct. 2019, pp. 231-9, doi:10.12834/VetIt.999.5287.1.