@book{bertin1974graphische,
  address = {Berlin [u.a.]},
  author = {Bertin, Jacques},
  editor = {Jensch, Georg},
  format = {book},
  interhash = {90ae920b0fee7923b0cd706518810d3c},
  intrahash = {5f010e60591984ca2ea25d5a3e74de0b},
  isbn = {3110036606},
  partauthors = {<div class="authornolink">Jensch, Georg</div><a class="link authorlink" href="https://hds.hebis.de/ubks/Author/Home?author=Jensch%2C+Georg">Jensch, Georg</a> (Bearb.)},
  primaryauthor = {Bertin, Jacques},
  publisher = {de Gruyter},
  shortsubtitle = {: Diagramme, Netze, Karten},
  shorttitle = {Graphische Semiologie : Diagramme, Netze, Karten},
  subtitle = {Diagramme, Netze, Karten / Jacques Bertin. Übers. u. bearb. nach d. 2. franz. Aufl. von Georg Jensch ...},
  title = {Graphische Semiologie : Diagramme, Netze, Karten},
  titlestatement = {Jacques Bertin. Übers. u. bearb. nach d. 2. franz. Aufl. von Georg Jensch ...},
  uniqueid = {HEB034827188},
  url = {http://scans.hebis.de/HEBCGI/show.pl?03482718_toc.pdf},
  year = 1974
}

@book{bertin1982graphische,
  address = {Berlin [u.a.]},
  author = {Bertin, Jacques},
  editor = {Scharfe, Wolfgang},
  format = {book},
  interhash = {56d32ca92eb46979a4c431cbec5c7f77},
  intrahash = {94690148e35427e798ee0a7a29b282ce},
  isbn = {3110069008},
  partauthors = {<div class="authornolink">Scharfe, Wolfgang</div><a class="link authorlink" href="https://hds.hebis.de/ubks/Author/Home?author=Scharfe%2C+Wolfgang">Scharfe, Wolfgang</a> (Bearb.)},
  primaryauthor = {Bertin, Jacques},
  publisher = {de Gruyter},
  shorttitle = {Graphische Darstellungen und die graphische Weiterverarbeitung der Information},
  subtitle = {Jacques Bertin. Übers. u. bearb. von Wolfgang Scharfe},
  title = {Graphische Darstellungen und die graphische Weiterverarbeitung der Information},
  titlestatement = {Jacques Bertin. Übers. u. bearb. von Wolfgang Scharfe},
  uniqueid = {HEB034827080},
  url = {http://scans.hebis.de/HEBCGI/show.pl?03482708_toc.pdf},
  year = 1982
}

@article{becker2013human,
  abstract = {Anonymous location data from cellular phone networks sheds light on how people move around on a large scale.},
  acmid = {2398375},
  address = {New York, NY, USA},
  author = {Becker, Richard and C\'{a}ceres, Ram\'{o}n and Hanson, Karrie and Isaacman, Sibren and Loh, Ji Meng and Martonosi, Margaret and Rowland, James and Urbanek, Simon and Varshavsky, Alexander and Volinsky, Chris},
  doi = {10.1145/2398356.2398375},
  interhash = {a12186255089937b97b17bd46c1dc689},
  intrahash = {98da3ee109ea87bdb735cbda1fd202a7},
  issn = {0001-0782},
  issue_date = {January 2013},
  journal = {Communications of the ACM},
  month = jan,
  number = 1,
  numpages = {9},
  pages = {74--82},
  publisher = {ACM},
  title = {Human mobility characterization from cellular network data},
  url = {http://doi.acm.org/10.1145/2398356.2398375},
  volume = 56,
  year = 2013
}

@book{lynch1992image,
  author = {Lynch, Kevin},
  interhash = {7e2c57af8a2ba9fde0cfa4f401cdc72f},
  intrahash = {2e9cc23aad987c883011884d6375dc4d},
  isbn = {9780262620017},
  publisher = {MIT Press},
  title = {The image of the city},
  url = {http://books.google.de/books?id=\_phRPWsSpAgC},
  year = 1992
}