Schmidt, G.; Brekke, A.; Czechowsky, P.; Hall, C. M.; Widdel, H. U.: Spatial Extent and Persistance of Mesospheric Turbulent Layers. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1985)
Schlegel, K.; Rose, G.; Widdel, H. U.: Interplanetary magnetic field polarity changes and D-region radio wave absorption. Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany (1976)
Widdel, H. U.; Rose, G.; Borchers, R.: Experimental results on the variation of ion condctivity and mobility in the mesosphere. Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany (1976)
Analyzing the high spatial resolution solar Ca II H and K emission data obtained by the SUNRISE mission and building a model of other stars more active than the Sun
For PhD students whose project is already funded and who are applying for admission to the IMPRS, or for applicants who want to bring their own funding and their own project idea to the IMPRS.