@article{bicknell1998new,
  title = {New methodology for the ecological footprint with an application to the New Zealand economy}
  author = {Bicknell, Kathryn B; Ball, Richard J; Cullen, Ross; Bigsby, Hugh R},
  journal = {Ecological Economics},
  url = {http://www.sciencedirect.com/science/article/pii/S0921800997001365},
  doi = {10.1016/S0921-8009(97)00136-5},
  year = {1998}
}