9Bush K, Jacoby GA, Medeiross AA. A funcional classification scheme for β-lactamases and its correlation with molecaular structure[J].Antimicrob Agents Chemother 1995,39(6) : 1211-1233.
10Liu PY, Tung JC, Ke SC, et al. Molecular epidemiology of exended-speetrum β-lactamase-producing Kleb,siella pneumoniae isolates in a district hospital in Taiwan[J]. J Clin Microbiol, 1998,36(9) :2759-2762.
