@misc{indiciae3642492b687e,
  title = {Bäcklund transformations for multidimensional sine-Gordon equations.},
  author = {R Benguria and K M Case},
  year = {1980},
  doi = {10.1073/pnas.77.8.4393},
  url = {https://pubmed.ncbi.nlm.nih.gov/16592854/},
  note = {Source identifier: 16592854}
}