@article{ref1,
title="Working in shifts--in the railroad industry",
journal="Narodno Zdravlje",
year="1971",
author="Savić, N.",
volume="27",
number="7",
pages="248-253",
abstract="<p>[Abstract unavailable]</p><p>Language: hr</p>",
language="sr",
issn="0027-8025",
doi="",
url="http://dx.doi.org/"
}