BibTex format
@article{Farrell:2014:10.1016/j.socscimed.2014.10.039,
author = {Farrell, L and Hollingsworth, B and Propper, C and Shields, MA},
doi = {10.1016/j.socscimed.2014.10.039},
journal = {SOCIAL SCIENCE & MEDICINE},
pages = {55--63},
title = {The socioeconomic gradient in physical inactivity: Evidence from one million adults in England},
url = {http://dx.doi.org/10.1016/j.socscimed.2014.10.039},
volume = {123},
year = {2014}
}