1. Andreasen, M., Nielsen, J.P., Baekbo, P., Willeberg, P., Bøtner, A., 1999. Serological patterns of respiratory infections in swineherds: A longitudinal study. In: Andreasen, M. (Ed.), Seroepidemiologiske og eksperimentelle undersoegelser af luftvejslidelser i svinebesaetninger. Ph.D. Thesis, Copenhagen, pp.75–96.
2. RTX toxin genotypes and phenotypes in Actinobacillus pleuropneumoniae field strains;Beck;J. Clin. Microbiol.,1994
3. Characterization of the lipopolysaccharide O antigens of Actinobacillus pleuropneumoniae serotype 9 and 11: antigenic relationships among serotypes 9, 11 and 1;Beynon;J. Bacteriol.,1992
4. Humeral antibody response and protective immunity in swine following immunization with the 104 kDa haemolysin II (ApxII) and pleuro toxin (ApxIII);Devenish;Microbiol.,1990
5. Biochemical and serological properties of Actinobacillus pleuropneumoniae biotype 2 strains isolated from swine;Fodor;Vet. Microbiol.,1989