@article{ref1,
title="Histologic response of skin to repeated trauma",
journal="Dermatologica",
year="1971",
author="Johnson, W. C. and Butterworth, T.",
volume="142",
number="1",
pages="7-13",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-9075",
doi="",
url="http://dx.doi.org/"
}