@misc{indiciae6b3408ed2df4,
  title = {Vortex-ring model of the superfluid lambda transition.},
  author = {GA Williams},
  year = {1987},
  doi = {10.1103/physrevlett.59.1926},
  url = {https://pubmed.ncbi.nlm.nih.gov/10035370/},
  note = {Source identifier: 10035370}
}