8Crichton P B, Old D C. Salmonellae of serotypes gallinarum and Pullorum grouped by biotyping and fimbrial-gene probing [J]. J Med Microbiol, 1990, 32: 145-152.
9Christensen J P, Olsen J E, Hansen H C, et al. Characterization of Salmonella enterica serovar gallinarum biovars gallinarum and pullorum by plasmid profiling and biochemical analysis [J]. Avian Pathol, 1992, 21: 461-470.
10Christensen J P, Olsen J E, Bisgaard M. Ribotypes of Salmonella enterica serovar Gallinarum biovars gallinarum and pullorum [J]. Avian Pathol, 1993, 22: 725-738.