“Characterization of Specific Passive Immunity Stimulated by Vaccination of Beef Cows Grazing Native Range With E. Coli 0157:H7-SRP®”. The Bovine Practitioner, vol. 44, no. 1, Feb. 2010, pp. 12-16, https://doi.org/10.21423/bovine-vol44no1p12-16.