@article{8978,
  author = {P. Schneider and Achim Weiss},
  title = {Light propagation in inhomogeneous universes},
  year = {1988},
  journal = {The Astrophysical Journal},
  volume = {327},
  pages = {526},
  month = {Jan-04-1988},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1988ApJ...327..526S},
  doi = {10.1086/166214},
}