@article{Bragard2015,
  author    = {Michael Bragard},
  title     = {Effektvoller LED-Kreisel : zeigt Text wie programmiert, wenn er rotiert},
  journal   = {Elektor : electronics worldwide},
  volume    = {39},
  number    = {12},
  pages     = {18 -- 23},
  year      = {2015},
}