8George AM. Multidrug resistance in enteric and other gramnegative becteria[J]. Ferns Microbial Lett, 1996,139 : 1-10.
9Chen HY, YuAn M, Livermore DM. Mechanisms of resistance to beta-lactam antibiotics amongst Pseudomonas aeruginosa isolates collected in the UK in 1993[J]. J Med Microbiol, 1995,43:300-309.
10Penny S. Clinical review manae ment of stenotrophomonia maltophilia infection[J]. Consult pharm,2000,15:74-78.