1. 1. Berthoud, H., Frey, J. and Kuhnert, P. 2002. Characterization of Aqx and its operon: the hemolytic RTX determinant of Actinobacillus equuli. Vet. Microbiol. 87: 159–174.
2. 2. Carmalt, J. L., Baptiste, K. E. and Chirino-Trejo, J. M. 1999. Actinobacillus lignieresii infection in two horses. J. Am. Vet. Med. Assoc. 215: 826–828, 796.
3. 3. Carr, E. A., Carlson, G. P., Wilson, W. D. and Read, D. H. 1997. Acute hemorrhagic pulmonary infarction and necrotizing pneumonia in horses: 21 cases (1967–1993). J. Am. Vet. Med. Assoc. 210: 1774–1778.
4. 4. Christensen, H. and Bisgaard, M. 2004. Revised definition of Actinobacillus sensu stricto isolated from animals. A review with special emphasis on diagnosis. Vet. Microbiol. 99: 13–30.
5. 5. Christensen, H., Bisgaard, M. and Olsen, J. E. 2002. Reclassification of equine isolates previously reported as Actinobacillus equuli, variants of A. equuli, Actinobacillus suis or Bisgaard taxon 11 and proposal of A. equuli subsp. equuli subsp. nov. and A. equuli subsp. haemolyticus subsp. nov. Int. J. Syst. Evol. Microbiol. 52: 1569–1576.