@misc{indiciae8b8bc7e98edb,
  title = {Topological sigma models with loop groups as the target manifolds.},
  author = {HL Hu},
  year = {1991},
  doi = {10.1103/physrevd.44.2498},
  url = {https://pubmed.ncbi.nlm.nih.gov/10014130/},
  note = {Source identifier: 10014130}
}