@article{Physics.5.105,
  title = {The Longevity of Rankings},
  author = {Caldarelli, Guido},
  journal = {Physics},
  volume = {5},
  issue = {},
  pages = {105},
  numpages = {1},
  year = {2012},
  month = {Sep},
  doi = {10.1103/Physics.5.105},
  url = {http://link.aps.org/doi/10.1103/Physics.5.105},
  publisher = {American Physical Society}
}