@article{ref1,
title="Thoracic impedance of human subjects",
journal="Medical and biological engineering and computing",
year="1978",
author="Machin, J. W.",
volume="16",
number="2",
pages="169-178",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-0118",
doi="",
url="http://dx.doi.org/"
}