@misc{indiciae0e1f69d09137,
  title = {Spectral flow in a (1+1)-dimensional model.},
  author = {W Keil and R Kobes},
  year = {1985},
  doi = {10.1103/physrevd.32.2231},
  url = {https://pubmed.ncbi.nlm.nih.gov/9956401/},
  note = {Source identifier: 9956401}
}