Joint Planetary Interior Physics Research Group of the University Münster and DLR Berlin, Institute of Planetary Research DLR, Rutherfordstr. 2, Berlin, 12489 Germany; Department of Geophysics, Charles University, V Holesovickach 2, Prague 8, 18000 Czech Republic
Joint Planetary Interior Physics Research Group of the University Münster and DLR Berlin, Institute of Planetary Research DLR, Rutherfordstr. 2, Berlin, 12489 Germany