Abd El-Aziz, Norhan Khairy, et al. “A Complex Hierarchical Quorum-Sensing Circuitry Modulates Phenazine Gene Expression in Pseudomonas Aeruginosa”. The Journal of Infection in Developing Countries, vol. 11, no. 12, Jan. 2018, pp. 919-25, doi:10.3855/jidc.8775.