Duit, R. et al. (1992): Research in Physics Learning – Theoretical Issues and Empirical Studies, Proceedings of an International Workshop held at the University of Bremen, March 4-8, 1991

Duit, R., Goldberg, F. & Niedderer, H. (Hrsg.). (1992). Research in Physics Learning - Theoretical Issues and Empirical Studies, Proceedings of an International Workshop held at the University of Bremen, March 4-8, 1991. Kiel: IPN.@book{niedderer1992, title={Research in Physics Learning - Theoretical Issues and Empirical Studies, Proceedings of an International Workshop held at the University of Bremen, March 4-8, 1991}, year={1992}, editor={Reinders Duit and Fred Goldberg and Hans Niedderer}, location={Kiel}, publisher={IPN} } 