@article{universalityandherdimmunitythreshold,
  title = {Universality and herd immunity threshold : Revisiting the SIR model for COVID-19},
  author = {Sourav Chowdhury and Suparna Roychowdhury and Indranath Chaudhuri},
  year = {2021},
  eprint = {2106.04859},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2106.04859v2},
}