@article{Driscoll1998,
author = {Driscoll, J. and Kraay, A.},
title= {Consistent covariance matrix estimation with spatially dependent panel data},
year = {1998},
doi = {10.1162/003465398557825},
journal = {Review of Economics and Statistics},
volume = {80},
number = {4},
pages = {549--560},
}