Islam, R., G. K. Deb, M. A. Kabir, M. F. H. Miraz, T. N. Nahar, S. J. Hossain, and S. Paul. “Supplementation of 9-Cis Retinoic Acid in the in Vitro Maturation Medium Increase Blastocyst Development Rate and Quality”. Asian Journal of Medical and Biological Research, vol. 3, no. 4, Jan. 2018, pp. 516-20, doi:10.3329/ajmbr.v3i4.35343.