@article{ref1,
title="Popular errors in living and their influence over the public health",
journal="North American review",
year="1897",
author="Purdy, Charles W.",
volume="164",
number="487",
pages="664-677",
abstract="If practised with ordinary intelligence and discretion, bicycling furnishes an ideal type of exercise.<p />",
language="",
issn="0029-2397",
doi="",
url="http://dx.doi.org/"
}