Zhang, Y., Pohlmann, E. L., & Roberts, G. P. (2005). GlnD Is Essential for NifA Activation, NtrB/NtrC-Regulated Gene Expression, and Posttranslational Regulation of Nitrogenase Activity in the Photosynthetic, Nitrogen-Fixing Bacterium Rhodospirillum rubrum. American Society for Microbiology.

Zhang, Yaoping, Edward L. Pohlmann, und Gary P. Roberts. GlnD Is Essential for NifA Activation, NtrB/NtrC-Regulated Gene Expression, and Posttranslational Regulation of Nitrogenase Activity in the Photosynthetic, Nitrogen-Fixing Bacterium Rhodospirillum Rubrum. American Society for Microbiology, 2005.

Zhang, Yaoping, Edward L. Pohlmann, und Gary P. Roberts. GlnD Is Essential for NifA Activation, NtrB/NtrC-Regulated Gene Expression, and Posttranslational Regulation of Nitrogenase Activity in the Photosynthetic, Nitrogen-Fixing Bacterium Rhodospirillum Rubrum. American Society for Microbiology, 2005.