@article {22256,
	title = {{\textquoteright}Ecometrics{\textquoteright}: Toward A Science of Assessing Ecological Settings, with Application to the Systematic Social Observation of Neighborhoods},
	journal = {Sociological Methodology},
	volume = {29},
	year = {1999},
	pages = {1-41},
	author = {Stephen W. Raudenbush and Robert J. Sampson}
}
