@article{ref1,
title="Pulse frequency changes in automobile drivers during various driving conditions",
journal="Munchener Medizinische Wochenschrift",
year="1971",
author="Becker, D. and Schwibbe, M. and Ahlbrecht, B. and Steufgen, M.",
volume="113",
number="45 Suppl",
pages="135-137",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0027-2973",
doi="",
url="http://dx.doi.org/"
}