@article {12186,
	title = {Collective Bargaining Laws \& Threat Effects of Unionism in Determination of Police Compensation},
	journal = {Journal of Labor Economics},
	volume = {72},
	year = {1985},
	note = {NBER WP $\#$1578},
	pages = {191-209},
	author = {B. Ichniowski and H. Lauer and Richard Freeman}
}
