Reizer, J., Hoischen, C., Reizer, A., Pham, T. N., & Saier, M. H. (1993). Sequence analyses and evolutionary relationships among the energy-coupling proteins Enzyme I and HPr of the bacterial phosphoenolpyruvate: Sugar phosphotransferase system. Cold Spring Harbor Laboratory Press.

Reizer, J., C. Hoischen, A. Reizer, T. N. Pham, and M. H. Saier. Sequence Analyses and Evolutionary Relationships Among the Energy-coupling Proteins Enzyme I and HPr of the Bacterial Phosphoenolpyruvate: Sugar Phosphotransferase System. Cold Spring Harbor Laboratory Press, 1993.

Reizer, J., et al. Sequence Analyses and Evolutionary Relationships Among the Energy-coupling Proteins Enzyme I and HPr of the Bacterial Phosphoenolpyruvate: Sugar Phosphotransferase System. Cold Spring Harbor Laboratory Press, 1993.