Thamer Kareem ALjanabi, Nihad Mohammed Nafel, S. M. G. S. M. S. A. S. S. K. “Effect of in Ovo Injection of Vitamins E and D3 on Hatchability and Embryos Development of Poultry”. Revista Electronica De Veterinaria, Aug. 2022, pp. 550 -60, https://veterinaria.org/index.php/REDVET/article/view/263.