@article{ref1,
title="Four Wheel Brakes for the Automobile",
journal="Zeitschrift des Vereines Deutscher Ingenieure",
year="1925",
author="Heller, A",
volume="69",
number="",
pages="1297-1300",
abstract="[Abstract unavailable]  <p> </p>",
language="",
issn="0341-7255",
doi="",
url="http://dx.doi.org/"
}