- Analysis of AmpC beta-lactamase gene in Pseudomonas aeruginosa . Ni, M., Zhang, D., Qi, J. Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban. (2005)