Ahmed, G. U., M. M. Rahman, M. N. Alam, and M. A. Alam. “Trial of Sex Reverse Percentage on Female Shing (heteropneustes Fossilis) by Using 17?-Estradiol Sex Hormone”. Research in Agriculture Livestock and Fisheries, vol. 2, no. 2, Sept. 2015, pp. 313-7, doi:10.3329/ralf.v2i2.25016.