Abdulkareem, T. A., Eidan, S. M., Ibrahim, F. F., Ali, H. A., Dano, R. G., Allwan, A. J. and Mohammed, O. A. (2018) “Effect of GnRH treatment at embryo transfer on pregnancy rate and early embryonic death of Holstein-Friesian cows”, Journal of Kerbala for Agricultural Sciences, 5(5), pp. 690–696. doi: 10.59658/jkas.v5i5.643.