@article{inequalityintheusefrequencyofpatent,
  title = {Inequality in the use frequency of patent technology codes},
  author = {José Alejandro Mendoza and Faustino Prieto and José María Sarabia},
  year = {2021},
  eprint = {2111.11211},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.11211v1},
}