Characterization of a Gene Family of Outer Membrane Proteins ( <i>ropB</i> ) in <i>Rhizobium leguminosarum</i> bv. <i>viciae</i> VF39SM and the Role of the Sensor Kinase ChvG in Their RegulationDallas L. Foreman, Christopher K. Yost, Elizabeth M. Vanderlinde et al.|Journal of Bacteriology|2009Cited by 33