@article{Gregory2005,
author = {Gregory, I.N. and Ell, P.S.},
title= {Analyzing spatiotemporal change by use of National Historical Geographical Information Systems: Population change during and after the Great Irish Famine},
year = {2005},
doi = {10.3200/HMTS.38.4.149-167},
journal = {Historical Methods},
volume = {38},
number = {4},
pages = {149--167},
}