P. H. Uselton

Police evaluation research: an experimental and cost-benefit analysis of a helicopter patrol in a high crime area.

J. Schnelle, R. Kirchner, M. McNees, 1978, Journal of applied behavior analysis.

Patrol evaluation research: a multiple-baseline analysis of saturation police patrolling during day and night hours.

J. Schnelle, J F Schnelle, R E Kirchner, 1977, Journal of applied behavior analysis.