@misc{indiciae2d25555fe147,
  title = {Mass renormalization by instantons and the strong CP problem.},
  author = {K Choi and CW Kim and WK Sze},
  year = {1988},
  doi = {10.1103/physrevlett.61.794},
  url = {https://pubmed.ncbi.nlm.nih.gov/10039432/},
  note = {Source identifier: 10039432}
}