Medina-Cruz, M., C. Cruz, and H. H. Montaldo. “Serum Protein Levels in Holstein Calves Fed Pasteurized-Frozen-Thawed or Unpasteurized First-Milk Colostrum”. The Bovine Practitioner, vol. 42, no. 2, June 2008, pp. 201-8, doi:10.21423/bovine-vol42no2p201-208.