@article{ref1,
title="The Environment and Visual Requirements of Railway Enginemen and Firemen - Personal Observations From an Engine Cab",
journal="Journal of the American Medical Association",
year="1905",
author="Black, NM",
volume="44",
number="7",
pages="518-528",
abstract="<p>Concerns the visual requirements of train operators, the design and placement of signals, and the problems created by distractions from engine smoke, telegraph lines, and buildings.</p>",
language="",
issn="0002-9955",
doi="",
url="http://dx.doi.org/"
}