@Book{123174767,
author="Needham, Joseph",
title="Military technology: the gunpowder epic",
series="Science and civilisation in China. Vol. 5, Pt. 7",
year="1986",
publisher="Cambridge Univ. Press",
address="Cambridge [u.a.]",
note="with the collaboration of Ho Ping-Y{\"u}; Gwei-Djen Lu and Wang Ling",
note="Section 30 continued. - Literaturverz. S. 583-650",
isbn="0521303583",
language="English"
}