Heimer, S. R., Welch, R. A., Perna, N. T., Pósfai, G., Evans, P. S., Kaper, J. B., . . . Mobley, H. L. T. (2002). Urease of Enterohemorrhagic Escherichia coli: Evidence for Regulation by Fur and a trans-Acting Factor. American Society for Microbiology.

Heimer, Susan R., Rod A. Welch, Nicole T. Perna, György Pósfai, Peter S. Evans, James B. Kaper, Fred R. Blattner, ja Harry L. T. Mobley. Urease of Enterohemorrhagic Escherichia Coli: Evidence for Regulation By Fur and a Trans-Acting Factor. American Society for Microbiology, 2002.

Heimer, Susan R., et al. Urease of Enterohemorrhagic Escherichia Coli: Evidence for Regulation By Fur and a Trans-Acting Factor. American Society for Microbiology, 2002.