@article{Balk2006,
author = {Balk, D.L. and Deichmann, U. and Yetman, G. and Pozzi, F. and Hay, S.I. and Nelson, A.},
title= {Determining global population distribution: Methods, applications and data},
year = {2006},
doi = {10.1016/S0065-308X(05)62004-0},
volume = {62},
pages = {119--156},
}