@article{ref1,
title="The Development of the Professional Unions and the Guidelines of the Modern Accident Control",
journal="Zeitschrift des Vereines Deutscher Ingenieure",
year="1911",
author="Schlesinger, ",
volume="55",
number="",
pages="1880-1884",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0341-7255",
doi="",
url="http://dx.doi.org/"
}