@article{AmaScaBarSta00,
  author = {Amaral, L. A. N. and Scala, A. and Barth{\'e}l{\'e}my, M. and Stanley, H. E.},
  interhash = {db9e2b8a339b99ff8b0d914294e08b02},
  intrahash = {f370bf57bfd70dde6007f4bfc3775ec2},
  journal = {PNAS},
  number = 21,
  title = {Classes of small-world networks},
  volume = 97,
  year = 2000
}