@article{FerreinSteinbauer2017,
  author    = {Alexander Ferrein and Gerald Steinbauer},
  title     = {20 Years of RoboCup - A Subjective Retrospection},
  journal   = {KI - K{\"u}nstliche Intelligenz},
  volume    = {30},
  number    = {3},
  pages     = {225 -- 232},
  doi       = {10.1007/s13218-016-0449-5},
  year      = {2017},
}