@misc{indiciaef6bfe2008f5b,
  title = {Are 't Hooft indices constrained in preon models with complementarity?},
  author = {Y Okamoto},
  year = {1989},
  doi = {10.1103/physrevd.39.1798},
  url = {https://pubmed.ncbi.nlm.nih.gov/9959849/},
  note = {Source identifier: 9959849}
}