Johnston, J. W., Shamsulddin, H., Miller, A. F., & Apicella, M. A. (2010). Sialic acid transport and catabolism are cooperatively regulated by SiaR and CRP in nontypeable Haemophilus influenzae. Bmc Microbiology, 10, 240. https://doi.org/10.1186/1471-2180-10-240 (Original work published 2010)