@article{rajagopalan_2019,  title={Language issue in the 21st century and the centuries ahead: an exercise in crystal-ball gazing},  volume={35},  ISSN={0102-4450},  url={https://doi.org/10.1590/1678-460X2019350102},  DOI={10.1590/1678-460X2019350102},  number={1},  journal={DELTA: Documentação de Estudos em Lingüística Teórica e Aplicada},  publisher={Pontifícia Universidade Católica de São Paulo - PUC-SP},  author={Rajagopalan, Kanavillil},  year={2019},  pages={e2019350102} }