@article{ref1,
title="Environmental stress in depression",
journal="Modern veterinary practice",
year="1977",
author="Campbell, W. E.",
volume="58",
number="9",
pages="788-790",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0362-8140",
doi="",
url="http://dx.doi.org/"
}