@article{onufriev2013protonation,
  author = "A. V. Onufriev and E. Alexov",
  title = "Protonation and pK changes in protein-ligand binding",
  year = 2013,
  journal = "Quarterly reviews of biophysics",
  publisher = "NIH Public Access",
  volume = 46,
  number = 2,
  pages = "181"
}