@article{Williams2015,
author = {Williams, N.E. and Thomas, T.A. and Dunbar, M. and Eagle, N. and Dobra, A.},
title= {Measures of human mobility using mobile phone records enhanced with GIS data},
year = {2015},
doi = {10.1371/journal.pone.0133630},
volume = {10},
number = {7},
}