@article{Han_2017,
title={Visual patent trend analysis for informed decision making in technology management},
volume={49},
ISSN={0172-2190},
url={http://dx.doi.org/10.1016/j.wpi.2017.04.003},
DOI={10.1016/j.wpi.2017.04.003},
journal={World Patent Information},
publisher={Elsevier BV},
author={Han,
Qi and Heimerl,
Florian and Codina-Filba,
Joan and Lohmann,
Steffen and Wanner,
Leo and Ertl,
Thomas},
year={2017},
month=jun,
pages={34–42} }