A map created from a data of mobile phone calls shows how people connect in the US, within states and across state borders.
MIT Sensible City Lab [2011] The Connected States of America [Online] http://senseable.mit.edu/csa/interact.html [14/10/2011]
Ratti, Carlo., Sobolevsky, Stanislav., Calabrese, Francesco., Andris, Clio., Reades, Jonathan., Martino, Mauro., Claxton, Rob. & Strogatz, Steven H. (2010) Redrawing the Map of Great Britain from a Network of Human Interactions [Online]
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0014248 [14/10/2011]
Calabrese, Francesco., Dahlem, Dominik., Gerber, Alexandre., Paul, DeDe., Chen, Xiaoji., Rowland, James., Rath, Christopher. & Ratti, Carlo (2011) The Connected States of America: Quantifying Social Radii of Influence [Online] http://senseable.mit.edu/papers/pdf/2011_calabrese_et_al_socialcom.pdf
[14/10/2011]
