R. S. Baracat, R. M. Neto, C. Daniele, R. Bessi, and I. U. Packer, “Extended colostrum feeding and passive immunity in newborn calves”, PAB, vol. 32, no. 11, pp. 1215–1220, Nov. 1997, doi: 10.1590/S1678-3921.pab1997.v32.4772.