Humphrey, T., Clark, L., Perrett, C., Malt, L., Harward, C., Humphrey, S., . . . Jepson, M. (2011). Differences in Salmonella enterica serovar Typhimurium strain invasiveness are associated with heterogeneity in SPI-1 gene expression. Microbiology, 157(7), pp. 2072-2083. doi:10.1099/mic.0.048496-0

Humphrey, Thomas, et al. "Differences in Salmonella Enterica Serovar Typhimurium Strain Invasiveness Are Associated With Heterogeneity in SPI-1 Gene Expression." Microbiology 157, no. 7 (2011): 2072-2083.

Humphrey, Thomas, et al. "Differences in Salmonella Enterica Serovar Typhimurium Strain Invasiveness Are Associated With Heterogeneity in SPI-1 Gene Expression." Microbiology 157.7 (2011): 2072-2083.