@misc{indiciae011ee11c81f0,
  title = {Miscellaneous algorithms for density modification.},
  author = {K Cowtan and P Main},
  year = {1998},
  doi = {10.1107/s0907444997011980},
  url = {https://pubmed.ncbi.nlm.nih.gov/9761844/},
  note = {Source identifier: 9761844}
}