@article{ref1,
title="Sleep patterns at an altitude of 3500 metres",
journal="International journal of biometeorology",
year="1986",
author="Selvamurthy, W. and Raju, V. R. and Ranganathan, S. and Hegde, K. S. and Ray, U. S.",
volume="30",
number="2",
pages="123-135",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-7128",
doi="",
url="http://dx.doi.org/"
}