@misc{Wahl,
  author    = {Wahl, Harald},
  title     = {International scientific network building for smart cities},
  subject      = {Smart City},
  language  = {en}
}
@inproceedings{BululukovaWahl,
  author    = {Bululukova, Darya and Wahl, Harald},
  title     = {Towards a sustainable smart cities integration in teaching and research},
  series = {Proceedings of Smart Cities and Green ICT Systems (Smart Greens 2015)},
  booktitle = {Proceedings of Smart Cities and Green ICT Systems (Smart Greens 2015)},
  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}
}