@article{albarran2015differences,
  title={Differences in citation impact across countries},
  author={Albarran, Pedro and Perianes-Rodriguez, Antonio and Ruiz-Castillo, Javier},
  journal={Journal of the Association for Information Science and Technology},
  year={2015},
  volume={66},
  number={3},
  pages={512--525},
  doi={10.1002/asi.23219}
}