H. . Mustafa Wasman, K. . Anwar Hassan, and E. . Jalel Ibrahem, “The Effect of using Ceftiofur drug on estrogen (E2) and progesterone (P4) concentrations during post parturition period in dairy cattle with Bacterial Endometritis”, SJCUS, vol. 6, no. 2, pp. 21-30, Feb. 2023.