Bari, J. ., M. . Islam, M. H. . Alam, . A. . Khatun, M. . Hashem, and M. . Moniruzzaman. “Effect of Polyvinylpyrrolidone on Vitrification of Buffalo (Bubalus Bubalis) Oocytes”. Journal of Buffalo Science, vol. 9, July 2020, pp. 152-8, doi:10.6000/1927-520X.2020.09.16.