@article{walker2004resilience,
  title = {Resilience, Adaptability and Transformability in Social-ecological Systems}
  author = {Walker, Brian and Holling, C. S. and Carpenter, Stephen R. and Kinzig, Ann},
  journal = {Ecology and Society},
  url = {http://www.ecologyandsociety.org/vol9/iss2/art5},
  year = {2004}
}