@article{Ernst,
  author    = {Stefan Ernst},
  title     = {BGH \"HappyDigits\"},
  series = {NJW-Audio-CD : aktuelle Rechtsinformationen zum H{\"o}ren},
  volume    = {2010},
  number    = {4},
  issn      = {1617-2914},
  language  = {de}
}