BibTex format
@article{Li:2016:10.1016/j.aap.2016.09.007,
author = {Li, H and Graham, DJ},
doi = {10.1016/j.aap.2016.09.007},
journal = {Accident Analysis & Prevention},
pages = {153--161},
title = {The Heterogeneous Treatment Effects of Speed Cameras on Road Safety},
url = {http://dx.doi.org/10.1016/j.aap.2016.09.007},
volume = {97},
year = {2016}
}