@misc{indiciae8e45a8dd5ade,
  title = {Polyalanine reconstruction from Calpha positions using the program CALPHA can aid initial phasing of data by molecular replacement procedures.},
  author = {R M Esnouf},
  year = {1997},
  doi = {10.1107/s0907444997005829},
  url = {https://pubmed.ncbi.nlm.nih.gov/15299854/},
  note = {Source identifier: 15299854}
}