Ambretti, S., P. Gaibani, F. Caroli, L. Miragliotta, G. Bua, and V. Sambri. “Phenotypic and Genotypic Characterization of Klebsiella Pneumoniae Strains With Reduced Susceptibiliy to Carbapenems”. Microbiologia Medica, vol. 24, no. 4, Dec. 2009, doi:10.4081/mm.2009.2506.