Atapattu, N.; Nelligaswatta, C. Effects of Citric Acid on the Performance and the Utilization of Phosphorous and Crude Protein in Broiler Chickens Fed on Rice By-Products Based Diets. Int. J. Poult. Sci. 2005, 4 (12), 990–993. https://doi.org/10.3923/ijps.2005.990.993.