J. A. N. Lisbôa, F. J. Benesi, M. L. do R. Leal, and C. M. C. Teixeira, “Effect of age on the acid-base balance of healthy female calves in the first month of life”, Braz. J. Vet. Res. Anim. Sci., vol. 39, no. 3, pp. 136–142, Jan. 2002, doi: 10.1590/S1413-95962002000300005.