Hirschman, J., Wong, P. K., Sei, K., Keener, J., & Kustu, S. (1985). Products of nitrogen regulatory genes ntrA and ntrC of enteric bacteria activate glnA transcription in vitro: Evidence that the ntrA product is a sigma factor.

Hirschman, J., P K. Wong, K. Sei, J. Keener, and S. Kustu. Products of Nitrogen Regulatory Genes NtrA and NtrC of Enteric Bacteria Activate GlnA Transcription in Vitro: Evidence That the NtrA Product Is a Sigma Factor. 1985.

Hirschman, J., et al. Products of Nitrogen Regulatory Genes NtrA and NtrC of Enteric Bacteria Activate GlnA Transcription in Vitro: Evidence That the NtrA Product Is a Sigma Factor. 1985.