↑Boucher, Yan; Douady, Christophe J.; Papke, R. Thane; et al. (December 2003). "Lateral gene transfer and the origins of prokaryotic groups". Annual Review of Genetics. Palo Alto, CA: Annual Reviews. 37: 283–328.
↑Walsh, Timothy R. (October 2006). "Combinatorial genetic evolution of multiresistance". Current Opinion in Microbiology. Amsterdam, the Netherlands: Elsevier. 9 (5): 476–482.