@article{Chen2012,
author = {Chen, C.Y.-J. and Den, W.-S. and Yang, T.-C. and Matthews, S.A.},
title= {A geographically weighted quantile regression approach for spatial data analysis: An application to county-level U.S. mortality data},
year = {2012},
doi = {10.1111/j.1538-4632.2012.00841.x},
journal = {Geographical Analysis},
volume = {44},
number = {2},
pages = {134--150},
}