@misc{indiciae4663a9cf124a,
  title = {Excitons in C60 studied by temperature-dependent optical second-harmonic generation.},
  author = {A Janner and R Eder and B Koopmans and HT Jonkman and GA Sawatzky},
  year = {1995},
  doi = {10.1103/physrevb.52.17158},
  url = {https://pubmed.ncbi.nlm.nih.gov/9981142/},
  note = {Source identifier: 9981142}
}