@article{Clayton1994,
author = {Clayton, D. G. and Bernardinelli, L. and Montomoli, C. },
title= {Spatial autocorrelation in ecological analysis},
year = {1994},
doi = {10.1093/ije/22.6.1193},
journal = {International Journal of Epidemiology},
volume = {22},
pages = {1193--1202},
}