Rao, B. L. et al. Ind J Med Res, vol. Suzuki, H. et al. Antigenic analysis of influenza viruses isolated in Thailand between 1991 and 1994. New Microbiol, vol.
Communicable diseases surveillance .
Commun Dis Intell, vol. Virus Genes, vol. Brugmann, M. et al. Hansen, A. K. et al. Microbiological monitoring of laboratory pigs.