@article{tsm2015,
  title={Using graph theory for automated electric circuit solving},
  author={L Toscano, S Stella and E Milotti},
  journal={European Journal of Physics},
  volume={36},
  year={2015}
}

@article{hasseick2013,
  title={Impact of load structure variation and solar thermal energy integration on an existing district heating network},
  author={Ilyes Ben Hassine, Ursula Eicker},
  journal={Applied Thermal Engineering},
  volume={50},
  year={2013}
}