@article{Richter2004,
  author    = {Thomas Richter},
  title     = {Barrierefreiheit – Webseiten f{\"u}r alle zug{\"a}nglich machen},
  series = {Lehrer Online},
  volume    = {2004},
  number    = {4},
  year      = {2004},
  language  = {de}
}