BibTex format
@article{Propper:2012:10.1002/hec.1804,
author = {Propper, C},
doi = {10.1002/hec.1804},
journal = {HEALTH ECONOMICS},
pages = {33--40},
title = {Competition, incentives and the English NHS},
url = {http://dx.doi.org/10.1002/hec.1804},
volume = {21},
year = {2012}
}