@article{newman2001structure,
  abstract = {The structure of scientific collaboration networks is investigated. Two scientists are considered connected if they have authored a paper together and explicit networks of such connections are constructed by using data drawn from a number of databases, including MEDLINE biomedical research, the Los Alamos e-Print Archive physics, and NCSTRL computer science. I show that these collaboration networks form  ” small worlds,” in which randomly chosen pairs of scientists are typically separated by only a short path of intermediate acquaintances. I further give results for mean and distribution of numbers of collaborators of authors, demonstrate the presence of clustering in the networks, and highlight a number of apparent differences in the patterns of collaboration between the fields studied.},
  author = {Newman, M. E. J.},
  doi = {10.1073/pnas.98.2.404},
  eprint = {http://www.pnas.org/content/98/2/404.full.pdf+html},
  interhash = {8c5edd915b304ae09fc08e0a51dfd5e9},
  intrahash = {a4d3149c7198762a99102935da4d1bdb},
  journal = {Proceedings of the National Academy of Sciences},
  number = 2,
  pages = {404--409},
  title = {The structure of scientific collaboration networks},
  url = {http://www.pnas.org/content/98/2/404.abstract},
  volume = 98,
  year = 2001
}