@article{Graif2009,
author = {Graif, C. and Sampson, R.J.},
title= {Spatial heterogeneity in the effects of immigration and diversity on neighborhood homicide rates},
year = {2009},
doi = {10.1177/1088767909336728},
journal = {Homicide Studies},
volume = {13},
number = {3},
pages = {242--260},
}