@article{ref1,
title="Letter: Automobile head restraints",
journal="American journal of public health",
year="1974",
author="Roberts, E. N. and Roberts, C. D.",
volume="64",
number="11",
pages="1032, 1100-1",
abstract="Abstract unavailable.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}