@misc{kalyan2021ammus,
  title={AMMUS : A Survey of Transformer-based Pretrained Models in Natural Language Processing},
  author={Katikapalli Subramanyam Kalyan and Ajit Rajasekharan and Sivanesan Sangeetha},
  year={2021},
  eprint={2108.05542},
  archivePrefix={arXiv},
  primaryClass={cs.CL},
  url={https://arxiv.org/abs/2108.05542}
}