8Chen X, Zhang P, Blackall P J, et al. Characterization of Haemophilus paragallinarum isolates from China[J]. Avian Dis, 1993,37 : 574-576.
9Chen X,Miflin J K,Zhang P, et al. Development and application of DNA probes and PCR tests for Haemophilus paragallinarum [J]. Avian Dis, 1996,40 : 398- 407.
10Chen X,Chen Q,Zhang P, et al. Evaluation of a PCR test for the detection of Haemopkilus paragallinarum in China[J]. A vian Pathol, 1996,27:296-300.