@article{proximityfulltextsearchbymeansof,
  title = {Proximity Full-Text Search by Means of Additional Indexes with Multi-component Keys: In Pursuit of Optimal Performance},
  author = {Alexander B. Veretennikov},
  year = {2018},
  eprint = {1812.07640},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1812.07640v2},
}