D. H. de Oliveira, L. de P. Naves, N. B. de S. Nardelli, M. G. Zangerônimo, and P. B. Rodrigues, “Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca:available P ratios”, PAB, vol. 53, no. 11, pp. 1222–1229, Dec. 2018.