Afsharmanesh, M.; Pourreza, J. Effects of Calcium, Citric Acid, Ascorbic Acid, Vitamin D3 on the Efficacy of Microbial Phytase in Broiler Starters Fed Wheat-Based Diets I. Performance, Bone Mineralization and Ileal Digestibility. Int. J. Poult. Sci. 2005, 4 (6), 418–424. https://doi.org/10.3923/ijps.2005.418.424.