@article{Hanson2005,
author = {Hanson, S.},
title= {Perspectives on the geographic stability and mobility of people in cities},
year = {2005},
doi = {10.1073/pnas.0507309102},
journal = {Proceedings of the National Academy of Sciences},
volume = {102},
number = {43},
pages = {15301‒15306},
}