Drüppel, K. External Organizations;
Wirth, Richard 3.3 Chemistry and Physics of Earth Materials, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Drüppel, K., Wirth, R. (2007): Metasomatic transformation of plagioclase to sodalite: comparison between nature and experiment, Frontiers in Mineral Sciences 2007 (Cambridge, UK 2007) (Middlesex).