@misc{indiciae626a33b613ad,
  title = {Closed smooth strings on a torus.},
  author = {KS Viswanathan and Xiaoan Zhou},
  year = {1988},
  doi = {10.1103/physrevd.37.974},
  url = {https://pubmed.ncbi.nlm.nih.gov/9958766/},
  note = {Source identifier: 9958766}
}