@article{847408,
      author = {Mann, Avinoam,},
      url = {http://library.usi.edu/record/847408},
      title = {How groups grow [electronic resource] /},
      publisher = {Cambridge University Press,},
      recid = {847408},
      pages = {ix, 199 p. :},
      address = {Cambridge :},
      year = {2012},
}