@article{1334531,
  author = {David Penn and S Apell},
  title = {Spin Polarized Metastable Atom He De-excitation, Theory},
  year = {1991},
  number = {24},
  month = {1991-01-01 00:01:00},
  publisher = {Revista Colombiana de Fisica},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620377},
  language = {en},
}