@misc{indiciae6d7891837008,
  title = {Strong CP problem and flat potential.},
  author = {K Choi},
  year = {1985},
  doi = {10.1103/physrevd.31.1428},
  url = {https://pubmed.ncbi.nlm.nih.gov/9955845/},
  note = {Source identifier: 9955845}
}