@article{mathis_torres‐peimbert_peimbert_1998, 
  title={Temperature and Density Fluctuations in Planetary Nebulae}, 
  volume={495}, 
  DOI={10.1086/305254}, 
  publisher={IOP Publishing}, 
  author={Mathis and Torres‐Peimbert and Peimbert}, 
  year={1998}
  }