@article{ref1,
title="A revised conception of masculine-feminine differences in play activities",
journal="Journal of genetic psychology",
year="1960",
author="Rosenberg, B. G. and Sutton-smith, B.",
volume="96",
number="",
pages="165-170",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-1325",
doi="",
url="http://dx.doi.org/"
}