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Van Ham, Roeland C. H. J., Fernando González-Candelas, Francisco J. Silva, Beatriz Sabater, Andrés Moya, und Amparo Latorre. "Postsymbiotic Plasmid Acquisition and Evolution of the RepA1-replicon in Buchnera Aphidicola." Proc Natl Acad Sci U S A 2000.

Van Ham, Roeland C. H. J., et al. "Postsymbiotic Plasmid Acquisition and Evolution of the RepA1-replicon in Buchnera Aphidicola." Proc Natl Acad Sci U S A 2000.