@misc{indiciae50addcd5196d,
  title = {Differences in straggling for positrons and electrons.},
  author = {DP Heddle and LC Maximon},
  year = {1989},
  doi = {10.1103/physrevc.40.1632},
  url = {https://pubmed.ncbi.nlm.nih.gov/9966149/},
  note = {Source identifier: 9966149}
}