@misc{RubenzerRichterHofmann,
  author    = {Rubenzer, Sabrina and Richter, Georg and Hofmann, Alexander},
  title     = {Robotics peer-to-peer teaching summer school project involving university students, summer interns and middle school students},
  subject      = {Robotics},
  language  = {en}
}
@misc{HofmannRubenzerRichter,
  author    = {Hofmann, Alexander and Rubenzer, Sabrina and Richter, Georg},
  title     = {Development of a multi-grade curriculum: project "READY"},
  subject      = {Education},
  language  = {en}
}