@article{acomparisonofcosmologicalboltzmanncodes,
  title = {A comparison of cosmological Boltzmann codes: are we ready for high precision cosmology?},
  author = {U. Seljak and N. Sugiyama and M. White and M. Zaldarriaga},
  year = {2003},
  eprint = {astro-ph/0306052},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/astro-ph/0306052v1},
}