Halstead, S. L., Walker, R. D., Baker, J. C., Holland, R. E., Stein, G. E., & Hauptman, J. G. (1992). Pharmacokinetic evaluation of ceftiofur in serum, tissue chamber fluid and bronchial secretions from healthy beef-bred calves.

Halstead, S L., R D. Walker, J C. Baker, R E. Holland, G E. Stein, ja J G. Hauptman. Pharmacokinetic Evaluation of Ceftiofur in Serum, Tissue Chamber Fluid and Bronchial Secretions From Healthy Beef-bred Calves. 1992.

Halstead, S L., et al. Pharmacokinetic Evaluation of Ceftiofur in Serum, Tissue Chamber Fluid and Bronchial Secretions From Healthy Beef-bred Calves. 1992.