@misc{indiciaef9f0c23241d6,
  title = {Conical emission as cooperative fluorescence.},
  author = {W Chalupczak and W Gawlik and J Zachorowski},
  year = {1994},
  doi = {10.1103/physreva.49.r2227},
  url = {https://pubmed.ncbi.nlm.nih.gov/9910613/},
  note = {Source identifier: 9910613}
}