@article{fath2007ecological,
  title = {Ecological network analysis: network construction}
  author = {Fath, Brian D.; Scharler, Ursula M.; Ulanowicz, Robert E.; Hannon, Bruce},
  journal = {Ecological Modelling},
  url = {http://www.sciencedirect.com/science/article/pii/S0304380007002517},
  doi = {10.1016/j.ecolmodel.2007.04.029},
  year = {2007}
}