@misc{RohatschBallnerWahl,
  author    = {Rohatsch, Lukas and Ballner, Mathias and Wahl, Harald},
  title     = {Multimodal Information Screen - Towards an Awareness Raising for the Use of Public Transport},
  subject      = {Public Transport},
  language  = {en}
}
@misc{BululukovaWahlBallner,
  author    = {Bululukova, Darya and Wahl, Harald and Ballner, Mathias},
  title     = {European Academic Smart Cities Network - Renewable Urban Energy Systems, Sustainable Mobility and ICT Technology Nexus for Smart Cities Studies},
  subject      = {Smart City},
  language  = {en}
}
@misc{Wahl,
  author    = {Wahl, Harald},
  title     = {International scientific network building for smart cities},
  subject      = {Smart City},
  language  = {en}
}
@misc{BululukovaWahl,
  author    = {Bululukova, Darya and Wahl, Harald},
  title     = {Towards a sustainable smart cities integration in teaching and research},
  subject      = {Smart City},
  language  = {en}
}