@article{6681,
  author = {David Hummer and P. Storey},
  title = {Recombination of helium-like ions - I. Photoionization cross-sections and total recombination and cooling coefficients for atomic helium},
  year = {1998},
  journal = {Monthly Notices of the Royal Astronomical Society},
  volume = {297},
  pages = {1073-1078},
  month = {Nov-07-1998},
  issn = {0035-8711},
  doi = {10.1046/j.1365-8711.1998.2970041073.x},
}