@misc{indiciae31ada7b23133,
  title = {Extra fermions in E6 superstring theories.},
  author = {V Barger and NG Deshpande and RJ Phillips and K Whisnant},
  year = {1986},
  doi = {10.1103/physrevd.33.1912},
  url = {https://pubmed.ncbi.nlm.nih.gov/9956851/},
  note = {Source identifier: 9956851}
}