@article{ref1,
title="Studies on the burdensomeness of craneman's work at the port",
journal="Biuletyn Instytutu Medycyny Morskiej w Gda'nsku",
year="1968",
author="Waśkiewicz, J.",
volume="19",
number="1",
pages="123-131",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-4463",
doi="",
url="http://dx.doi.org/"
}