@article{Krell_2017,
title={Development and Application of a Category System to Describe Pre-Service Science Teachers’ Activities in the Process of Scientific Modelling},
volume={49},
ISSN={1573-1898},
url={http://dx.doi.org/10.1007/s11165-017-9657-8},
DOI={10.1007/s11165-017-9657-8},
number={5},
journal={Research in Science Education},
publisher={Springer Science and Business Media LLC},
author={Krell,
Moritz and Walzer,
Christine and Hergert,
Susann and Krüger,
Dirk},
year={2017},
month=sep,
pages={1319–1345} }