@misc{indiciae9dca22e50cbb,
  title = {Adaptive evolution that requires multiple spontaneous mutations. I. Mutations involving an insertion sequence.},
  author = {B G Hall},
  year = {1988},
  doi = {10.1093/genetics/120.4.887},
  url = {https://pubmed.ncbi.nlm.nih.gov/2852143/},
  note = {Source identifier: 2852143}
}