@article{Perrig_Peter_Schümann_2011, title={Grammatik im DaF-Unterricht}, volume={49}, url={https://bop.unibe.ch/linguistik-online/article/view/323}, DOI={10.13092/lo.49.323}, number={5}, journal={Linguistik Online}, author={Perrig, Gabriela and Peter, Klaus and Schümann, Michael}, year={2011}, month={Sep.} }