1. 1. Allan, B. J., van den Hurk, J. V. and Potter, A. A. 1993. Characterization of Escherichia coli isolated from cases of avian colibacillosis. Can. J. Vet. Res. 57: 146-151.
2. 2. Barnes, H. J., Vaillancourt, J.-P. and Gross, W. B. 2003. Colibacillosis. pp. 631-652. In: Diseases of Poultry, 11th ed. (Saif, Y. M., Barnes, H. J., Glisson, J. R., Fadly, A. M., McDougald, L. R. and Swayne, D. E. eds.), Iowa State Press, Ames.
3. Production of toxins (enterotoxins, verotoxins, and necrotoxins) and colicins by Escherichia coli strains isolated from septicemic and healthy chickens: relationship with in vivo pathogenicity
4. 4. Cheville, N. F. and Arp, L. H. 1978. Comparative pathologic findings of Escherichia coli infection in birds. J. Am. Vet. Med. Assoc. 173: 584-587.
5. 5. Cloud, S. S., Rosenberger, J. K., Fries, P. A., Wilson, R. A. and Odor, E. M. 1985. In vitro and in vivo characterization of avian Escherichia coli. I. Serotypes, metabolic activity, and antibiotic sensitivity. Avian Dis. 29: 1084-1093.