Deyu Li, James C. Delaney, Charlotte M. Page, et al., "Repair of DNA Alkylation Damage by the Escherichia coli Adaptive Response Protein AlkB as Studied by ESI-TOF Mass Spectrometry," Journal of Nucleic Acids, vol. 2010, Article ID 369434, 9 pages, 2010. doi:10.4061/2010/369434