@article{ref1,
title="Plastic helmet for head protection in children",
journal="CMAJ : Canadian Medical Association journal",
year="1955",
author="McLennan, T. A.",
volume="73",
number="11",
pages="899-899",
abstract="Abstract unavailable.",
language="",
issn="0820-3946",
doi="",
url="http://dx.doi.org/"
}