@misc{indiciaeb85f0c76c10f,
  title = {Universal estimates for critical circle mappings.},
  author = {K. M. Khanin},
  year = {1991},
  doi = {10.1063/1.165826},
  url = {https://pubmed.ncbi.nlm.nih.gov/12779911/},
  note = {Source identifier: 12779911}
}