Ku, W., Liu, Y., Hsu, Y., Liao, C., Liang, P., Yuan, H. S., & Chak, K. (2002). The zinc ion in the HNH motif of the endonuclease domain of colicin E7 is not required for DNA binding but is essential for DNA hydrolysis. Oxford University Press.

Ku, Wen-Yen, Yu-Wen Liu, Ya-Chein Hsu, Chen-Chung Liao, Po-Huang Liang, Hanna S. Yuan, and Kin-Fu Chak. The Zinc Ion in the HNH Motif of the Endonuclease Domain of Colicin E7 Is Not Required for DNA Binding but Is Essential for DNA Hydrolysis. Oxford University Press, 2002.

Ku, Wen-Yen, et al. The Zinc Ion in the HNH Motif of the Endonuclease Domain of Colicin E7 Is Not Required for DNA Binding but Is Essential for DNA Hydrolysis. Oxford University Press, 2002.