“The Effect of Two Challenge Doses of Dictyocaulus Filaria on the Acquired Immunity of Sheep Vaccinated With ‘Filiraq’”.
The Iraqi Journal of Veterinary Medicine 23, no. 1 (June 28, 1999): 1–10. Accessed January 3, 2025.
https://jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/1183.