@article{ref1,
title="The early development of firearms in China",
journal="Isis; an international review devoted to the history of science and its cultural influences",
year="1946",
author="Goodrich, L. Carrington and Chia-shêng, Fêng",
volume="36",
number="2",
pages="114-123",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0021-1753",
doi="10.2307/225875",
url="http://dx.doi.org/10.2307/225875"
}