@article{ref1,
title="Obsessive psychoneurosis in twins",
journal="Acta geneticae medicae et gemellologiae",
year="1970",
author="Braconi, L.",
volume="19",
number="1",
pages="318-322",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0001-5660",
doi="",
url="http://dx.doi.org/"
}