M. Mondal, S. Panda, and P. Biswas, “Effect of Microbial Phytase in Soybean Meal Based Broiler Diets Containing Low Phosphorous”, Int. J. Poult. Sci., vol. 6, no. 3, pp. 201–206, Feb. 2007, doi: 10.3923/ijps.2007.201.206.