@article{ref1,
title="Some crises in adolescence",
journal="Bristol medico-chirurgical journal (1963)",
year="1972",
author="Walker, W. L.",
volume="87",
number="322",
pages="15-18",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0308-6356",
doi="",
url="http://dx.doi.org/"
}