Lukkana, M., S. Jantrakajorn, and J. Wongtavatchai. “In vitro Suppression against Streptococcal Bacteria and Health-Promoting Effects of Probiotic Bacillus polyfermenticus in Tilapia (Oreochromis niloticus)”. The Thai Journal of Veterinary Medicine, vol. 45, no. 1, Mar. 2015, pp. 121-9, https://he01.tci-thaijo.org/index.php/tjvm/article/view/32141.