@article{Sampson1999,
author = {Sampson, R.J. and Raudenbush, S.W.},
title= {Systematic social observation of public spaces: A new look at disorder in urban neighborhoods},
year = {1999},
doi = {10.1086/210356},
journal = {American Journal of Sociology},
volume = {105},
number = {3},
pages = {603--651},
}